chukiチュウキ関数

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引数に指定したユリウス日の直前の中気を求めます。

構文
chuki( JD )
引数
JD 必須
ユリウス日
戻り値
中気と太陽黄経を格納した配列(0 : 中気, 1 : 太陽黄経)

プログラム

UWSC
//////////////////////////////////////////////////
// 【引数】
//   JD : ユリウス日 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION chuki(JD)
	JD = JD - 9/24
	DIM t = (JD + 0.5 - 2451545) / 36525
	DIM λsun = longitudeSun(t)
	DIM λsun0 = 30 * INT(λsun/30)
	REPEAT
		t = (JD + 0.5 - 2451545) / 36525
		λsun = longitudeSun(t)
		DIM Δλ = λsun - λsun0
			SELECT TRUE
				CASE Δλ > 180
					Δλ = Δλ - 360
				CASE Δλ < -180
					Δλ = Δλ + 180
			SELEND
		DIM Δt = Δλ * 365.2 / 360
		JD = JD - Δt
	UNTIL Δt <= 1/86400
	JD = JD + 9/24
	DIM arr[1] = JD, λsun
	RESULT = SLICE(arr)
FEND

//////////////////////////////////////////////////
// 【引数】
//   deg : 角度(度数法) 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION degToRad(deg)
	RESULT = deg * (3.14159265358979 / 180)
FEND

//////////////////////////////////////////////////
// 【引数】
//   JC : ユリウス世紀 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION longitudeSun(JC)
	DIM A[18] = 0.0004, 0.0004, 0.0005, 0.0005, 0.0006, 0.0007, 0.0007, 0.0007, 0.0013, 0.0015, 0.0018, 0.0018, 0.0020, 0.0200, -0.0048*JC, 1.9147, 36000.7695*JC, 280.4659
	DIM k[18] = 31557.0, 29930.0, 2281.0, 155.0, 33718.0, 9038.0, 3035.0, 65929.0, 22519.0, 45038.0, 445267.0, 19.0, 32964.0, 71998.1, 35999.05, 35999.05, 0, 0
	DIM θ0[18] = 161.0, 48.0, 221.0, 118.0, 316.0, 64.0, 110.0, 45.0, 352.0, 254.0, 208.0, 159.0, 158.0, 265.1, 267.52, 267.52, 0, 0
	DIM λsun[18]
	FOR n = 0 TO 15
		DIM ang = normalizeAngle(k[n] * JC + θ0[n])
		λsun[n] = A[n] * COS(degToRad(ang))
	NEXT
	λsun[16] = normalizeAngle(A[16])
	λsun[17] = normalizeAngle(A[17])
	RESULT = normalizeAngle(CALCARRAY(λsun, CALC_ADD))
FEND

//////////////////////////////////////////////////
// 【引数】
//   deg : 度数法 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION normalizeAngle(deg)
	SELECT TRUE
		CASE deg >= 360
			deg = deg - INT(deg / 360) * 360
		CASE deg < 0
			deg = deg + INT(ABS(deg / 360) + 1) * 360
	SELEND
	RESULT = deg
FEND

中気

二十四節気のうち正節を除く12の節気を中気ちゅうきと言います。雨水(330)・春分(0)・穀雨(30)・小満(60)・夏至(90)・大暑(120)・処暑(150)・秋分(180)・霜降(210)・小雪(240)・冬至(270)・大寒(300)がそれにあたります。( )内は太陽黄経の角度。

旧暦(天保暦)には、原則として1月から12月までの各月に節気が入る。また調整のため閏月が入ることもある。

プログラム実行例

今年の穀雨の日付を求める

穀雨は太陽黄経30度なので、翌年1月1日から直前の中気を太陽黄経が30度になるまで繰り返す。

UWSC
GETTIME()
DIM year = G_TIME_YY + 1
DIM month = 1
DIM day = 1

REPEAT
	DIM chuki = chuki(YMDToJD(year, month, day))
	DIM d = JDToYMD(chuki[0])
	year = d[0]
	month = d[1]
	day = d[2]
UNTIL ROUND(chuki[1]) = 30

PRINT d[0] + "/" + d[1] + "/" + d[2]

//////////////////////////////////////////////////
// 【引数】
//   JD : ユリウス日 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION chuki(JD)
	JD = JD - 9/24
	DIM t = (JD + 0.5 - 2451545) / 36525
	DIM λsun = longitudeSun(t)
	DIM λsun0 = 30 * INT(λsun/30)
	REPEAT
		t = (JD + 0.5 - 2451545) / 36525
		λsun = longitudeSun(t)
		DIM Δλ = λsun - λsun0
			SELECT TRUE
				CASE Δλ > 180
					Δλ = Δλ - 360
				CASE Δλ < -180
					Δλ = Δλ + 180
			SELEND
		DIM Δt = Δλ * 365.2 / 360
		JD = JD - Δt
	UNTIL Δt <= 1/86400
	JD = JD + 9/24
	DIM arr[1] = JD, λsun
	RESULT = SLICE(arr)
FEND

//////////////////////////////////////////////////
// 【引数】
//   deg : 角度(度数法) 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION degToRad(deg)
	RESULT = deg * (3.14159265358979 / 180)
FEND

//////////////////////////////////////////////////
// 【引数】
//   JD : ユリウス日 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION JDToYMD(JD)
	DIM x0 = INT(JD + 68570)
	DIM x1 = INT(x0 / 36524.25)
	DIM x2 = x0 - INT(36524.25 * x1 + 0.75)
	DIM x3 = INT((x2 + 1) / 365.2425)
	DIM x4 = x2 - INT(365.25 * x3) + 31
	DIM x5 = INT(INT(x4) / 30.59)
	DIM x6 = INT(INT(x5) / 11)
	
	DIM t2 = x4 - INT(30.59 * x5)
	DIM t1 = x5 - 12 * x6 + 2
	DIM t0 = 100 * (x1 - 49) + x3 + x6
	
	IFB t1 = 2 AND t2 > 28 THEN
		SELECT TRUE
			CASE t0 MOD 100 = 0 AND t0 MOD 400 = 0
				t2 = 29
			CASE t0 MOD 4 = 0
				t2 = 29
			DEFAULT
				t2 = 28
		SELEND
	ENDIF
	
	DIM tm = 86400 * (JD - INT(JD))
	DIM t3 = INT(tm / 3600)
	DIM t4 = INT((tm - 3600 * t3) / 60)
	DIM t5 = INT(tm - 3600 * t3 - 60 * t4)
	DIM t[] = t0, t1, t2, t3, t4, t5
	
	RESULT = SLICE(t)
FEND

//////////////////////////////////////////////////
// 【引数】
//   JC : ユリウス世紀 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION longitudeSun(JC)
	DIM A[18] = 0.0004, 0.0004, 0.0005, 0.0005, 0.0006, 0.0007, 0.0007, 0.0007, 0.0013, 0.0015, 0.0018, 0.0018, 0.0020, 0.0200, -0.0048*JC, 1.9147, 36000.7695*JC, 280.4659
	DIM k[18] = 31557.0, 29930.0, 2281.0, 155.0, 33718.0, 9038.0, 3035.0, 65929.0, 22519.0, 45038.0, 445267.0, 19.0, 32964.0, 71998.1, 35999.05, 35999.05, 0, 0
	DIM θ0[18] = 161.0, 48.0, 221.0, 118.0, 316.0, 64.0, 110.0, 45.0, 352.0, 254.0, 208.0, 159.0, 158.0, 265.1, 267.52, 267.52, 0, 0
	DIM λsun[18]
	FOR n = 0 TO 15
		DIM ang = normalizeAngle(k[n] * JC + θ0[n])
		λsun[n] = A[n] * COS(degToRad(ang))
	NEXT
	λsun[16] = normalizeAngle(A[16])
	λsun[17] = normalizeAngle(A[17])
	RESULT = normalizeAngle(CALCARRAY(λsun, CALC_ADD))
FEND

//////////////////////////////////////////////////
// 【引数】
//   deg : 度数法 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION normalizeAngle(deg)
	SELECT TRUE
		CASE deg >= 360
			deg = deg - INT(deg / 360) * 360
		CASE deg < 0
			deg = deg + INT(ABS(deg / 360) + 1) * 360
	SELEND
	RESULT = deg
FEND

//////////////////////////////////////////////////
// 【引数】
//   year : 年 
//   month : 月 
//   day : 日 
//   hour : 時 
//   minute : 分 
//   second : 秒 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION YMDToJD(year, month, day, hour = 0, minute = 0, second = 0)
	year = VAL(year);	month = VAL(month);		day = VAL(day);
	hour = VAL(hour);	minute = VAL(minute);	second = VAL(second)
	IFB month < 3 THEN
		year = year - 1
		month = month + 12
	ENDIF
	DIM JD = INT(year * 365.25)
	JD = JD + INT(year / 400)
	JD = JD - INT(year / 100)
	JD = JD + INT((month - 2) * 30.59)
	JD = JD + 1721088
	JD = JD + day
	DIM t = second / 3600
	t = t + minute / 60
	t = t + hour
	t = t / 24
	JD = JD + t
	RESULT = JD
FEND
結果
プレーンテキスト
2020/4/19
使用関数

今年の春彼岸の日付を求める

翌年1月1日の直前の太陽黄経0度の日付(春分の日)を求め、その日を中日とする前後3を合わせた7日間を求める。

UWSC
GETTIME()
DIM year = G_TIME_YY + 1
DIM month = 1
DIM day = 1

REPEAT
	DIM chuki = chuki(YMDToJD(year, month, day))
	DIM d = JDToYMD(chuki[0])
	year = d[0]
	month = d[1]
	day = d[2]
UNTIL normalizeAngle(ROUND(chuki[1])) = 0

RESIZE(d, 2)
arrayMap("text(%val%, <#DBL>00<#DBL>)", d)
date = JOIN(d, "/")
PRINT "彼岸入り:" + dateAdd("d", -3, date)
PRINT "春分の日:" + date
PRINT "彼岸明け:" + dateAdd("d", 3, date)

//////////////////////////////////////////////////
// 【引数】
//   JD : ユリウス日 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION chuki(JD)
	JD = JD - 9/24
	DIM t = (JD + 0.5 - 2451545) / 36525
	DIM λsun = longitudeSun(t)
	DIM λsun0 = 30 * INT(λsun/30)
	REPEAT
		t = (JD + 0.5 - 2451545) / 36525
		λsun = longitudeSun(t)
		DIM Δλ = λsun - λsun0
			SELECT TRUE
				CASE Δλ > 180
					Δλ = Δλ - 360
				CASE Δλ < -180
					Δλ = Δλ + 180
			SELEND
		DIM Δt = Δλ * 365.2 / 360
		JD = JD - Δt
	UNTIL Δt <= 1/86400
	JD = JD + 9/24
	DIM arr[1] = JD, λsun
	RESULT = SLICE(arr)
FEND

//////////////////////////////////////////////////
// 【引数】
//   interval : 加算する時間間隔を表す文字列式(yyyy:年、m:月、d:日、ww:週、h:時、n:分、s:秒) 
//   num : dateに加算する値。未来は正、過去は負で指定 
//   date : 時間間隔を加算する日付 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION dateAdd(interval, num, date)
	DIM year, month, day, d
	GETTIME(0, date)
	DIM time = G_TIME_HH2 + ":" + G_TIME_NN2 + ":" + G_TIME_SS2
	SELECT interval
		CASE "yyyy"
			d = (G_TIME_YY + num) + "/" + G_TIME_MM2 + "/" + G_TIME_DD2
			IF time <> "00:00:00" THEN d = d + " " + time
		CASE "m"
			IFB num > 0 THEN
				year = G_TIME_YY + INT((G_TIME_MM + num) / 12)
				month = REPLACE(FORMAT(((G_TIME_MM + num) MOD 12), 2), " ", "0")
			ELSE
				year = G_TIME_YY + CEIL((G_TIME_MM + num) / 12 - 1)
				month = REPLACE(FORMAT(G_TIME_MM - (ABS(num) MOD 12), 2), " ", "0")
			ENDIF
			IF month = "00" THEN month = 12
			day = G_TIME_DD2
			d = "" + year + month + day
			IFB !isDate(d) THEN
				d = year + "/" + month + "/" + "01"
				d = getEndOfMonth(d)
			ELSE
				d = year + "/" + month + "/" + day
			ENDIF
			IF time <> "00:00:00" THEN d = d + " " + time
		CASE "d"
			t = GETTIME(num, date)
			d = G_TIME_YY4 + "/" + G_TIME_MM2 + "/" + G_TIME_DD2 + IIF(t MOD 86400, " " + G_TIME_HH2 + ":" + G_TIME_NN2 + ":" + G_TIME_SS2, "")
		CASE "ww"
			t = GETTIME(num * 7, date)
			d = G_TIME_YY4 + "/" + G_TIME_MM2 + "/" + G_TIME_DD2 + IIF(t MOD 86400, " " + G_TIME_HH2 + ":" + G_TIME_NN2 + ":" + G_TIME_SS2, "")
		CASE "h"
			t = GETTIME(num / 24, date)
			d = G_TIME_YY4 + "/" + G_TIME_MM2 + "/" + G_TIME_DD2 + IIF(t MOD 86400, " " + G_TIME_HH2 + ":" + G_TIME_NN2 + ":" + G_TIME_SS2, "")
		CASE "n"
			t = GETTIME(num / 1440, date)
			d = G_TIME_YY4 + "/" + G_TIME_MM2 + "/" + G_TIME_DD2 + IIF(t MOD 86400, " " + G_TIME_HH2 + ":" + G_TIME_NN2 + ":" + G_TIME_SS2, "")
		CASE "s"
			t = GETTIME(num / 86400, date)
			d = G_TIME_YY4 + "/" + G_TIME_MM2 + "/" + G_TIME_DD2 + IIF(t MOD 86400, " " + G_TIME_HH2 + ":" + G_TIME_NN2 + ":" + G_TIME_SS2, "")
	SELEND
	RESULT = d
FEND

//////////////////////////////////////////////////
// 【引数】
//   interval : 時間単位(yyyy︰年、q:四半期、m︰月、d︰日、w:週日、ww:週、h:時、n:分、s:秒) 
//   date1 : 日時1 
//   date2 : 日時2 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION dateDiff(interval, date1, date2)
	DIM y1, y2, m1, m2, d1, d2, d
	SELECT interval
		CASE "yyyy"
			GETTIME(0, date1)
			y1 = G_TIME_YY
			GETTIME(0, date2)
			y2 = G_TIME_YY
			d = y2 - y1
		CASE "q"
			GETTIME(0, date1)
			y1 = G_TIME_YY
			m1 = G_TIME_MM
			GETTIME(0, date2)
			y2 = G_TIME_YY
			m2 = G_TIME_MM
			d = y2 * 4 + CEIL(m2/3) - (y1 * 4 + CEIL(m1/3))
		CASE "m"
			GETTIME(0, date1)
			y1 = G_TIME_YY
			m1 = G_TIME_MM
			GETTIME(0, date2)
			y2 = G_TIME_YY
			m2 = G_TIME_MM
			d = (y2 - y1) * 12 + m2 - m1
		CASE "d"
			d1 = GETTIME(0, date1)
			d2 = GETTIME(0, date2)
			d = (d2 - d1) / 86400
		CASE "w"
			d = INT(dateDiff("d", date1, date2) / 7)
		CASE "ww"
			date1 = dateAdd("d", -1 * getWeekday(date1), date1)
			d = INT(dateDiff("d", date1, date2) / 7)
		CASE "h"
			d = dateDiff("d", date1, date2) * 24
		CASE "n"
			d = dateDiff("d", date1, date2) * 1440
		CASE "s"
			d = dateDiff("d", date1, date2) * 86400
	SELEND
	RESULT = d
FEND

//////////////////////////////////////////////////
// 【引数】
//   deg : 角度(度数法) 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION degToRad(deg)
	RESULT = deg * (3.14159265358979 / 180)
FEND

//////////////////////////////////////////////////
// 【引数】
//   array : 最大公約数を求める数値を格納した配列 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION GCD(array[])
	DIM c = LENGTH(array)
	DIM rem = array[c-1] MOD array[c-2]
	IFB rem = 0 THEN
		IFB LENGTH(array) = 2 THEN
			RESULT = array[c-2]
			EXIT
		ENDIF
		RESIZE(array, c-2)
		RESULT = GCD(array)
		EXIT
	ENDIF
	array[c-1] = array[c-2]
	array[c-2] = rem
	RESULT = GCD(array)
FEND

//////////////////////////////////////////////////
// 【引数】
//   date : 日付(”YYYYMMDD” or “YYYY/MM/DD” or “YYYY-MM-DD” or “YYYYMMDDHHNNSS” or “YYYY/MM/DD HH:NN:SS”) 
//   m : 第一引数の指定日からプラスマイナスm月とする 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION getEndOfMonth(date, m = 0)
	date = dateAdd("m", m + 1, date)
	GETTIME(0, date)
	GETTIME(-G_TIME_DD, date)
	RESULT = G_TIME_YY4 + "/" + G_TIME_MM2 + "/" + G_TIME_DD2
FEND

//////////////////////////////////////////////////
// 【引数】
//   date : (”YYYYMMDD” or “YYYY/MM/DD” or “YYYY-MM-DD” or “YYYYMMDDHHNNSS” or “YYYY/MM/DD HH:NN:SS”) 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION getWeekday(date)
	GETTIME(0, date)
	RESULT = G_TIME_WW
FEND

//////////////////////////////////////////////////
// 【引数】
//   数値 : GETTIMEで取得した曜日の番号(G_TIME_WW=0:日曜….6:土曜) 
//   フォーマット : 以下のアルファベットは数値で指定した対応する曜日に置き換えられます。(aaa : 日〜土、aaaa : 日曜日〜土曜日、ddd : Sun〜Sat、dddd : Sunday〜Saturday) 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION getWeekdayName(num, format = "aaa")
	DIM re = CREATEOLEOBJ("VBScript.RegExp")
	DIM aaa[] = "日", "月", "火", "水", "木", "金", "土";
	DIM aaaa[] = "日曜日", "月曜日", "火曜日", "水曜日", "木曜日", "金曜日", "土曜日";
	DIM ddd[] = "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat";
	DIM dddd[] = "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday";
	match = reExecute(format, "(a|d)+")
	type = match.Item(0).Value
	RESULT = reReplace(format, EVAL(type + "[" + num + "]"), type)
FEND

//////////////////////////////////////////////////
// 【引数】
//   serial : 時間を表すシリアル値を指定 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION Hour(serial)
	RESULT = INT(serial * 24) MOD 24
FEND

//////////////////////////////////////////////////
// 【引数】
//   expr : 評価する式 
//   truepart : 評価した式がTrueのときに返す値 
//   falsepart : 評価した式がFalseのときに返す値 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION IIF(expr, truepart, falsepart)
	IFB EVAL(expr) THEN
		RESULT = truepart
	ELSE
		RESULT = falsepart
	ENDIF
FEND

//////////////////////////////////////////////////
// 【引数】
//   date : 存在するかを調べる日付文字列。YYYYMMDD or YYYY/MM/DD or YYYY-MM-DDのいずれかの形式。 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION isDate(date)
	TRY
		GETTIME(0, date)
		RESULT = TRUE
	EXCEPT
		RESULT = FALSE
	ENDTRY
FEND

//////////////////////////////////////////////////
// 【引数】
//   JD : ユリウス日 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION JDToYMD(JD)
	DIM x0 = INT(JD + 68570)
	DIM x1 = INT(x0 / 36524.25)
	DIM x2 = x0 - INT(36524.25 * x1 + 0.75)
	DIM x3 = INT((x2 + 1) / 365.2425)
	DIM x4 = x2 - INT(365.25 * x3) + 31
	DIM x5 = INT(INT(x4) / 30.59)
	DIM x6 = INT(INT(x5) / 11)
	
	DIM t2 = x4 - INT(30.59 * x5)
	DIM t1 = x5 - 12 * x6 + 2
	DIM t0 = 100 * (x1 - 49) + x3 + x6
	
	IFB t1 = 2 AND t2 > 28 THEN
		SELECT TRUE
			CASE t0 MOD 100 = 0 AND t0 MOD 400 = 0
				t2 = 29
			CASE t0 MOD 4 = 0
				t2 = 29
			DEFAULT
				t2 = 28
		SELEND
	ENDIF
	
	DIM tm = 86400 * (JD - INT(JD))
	DIM t3 = INT(tm / 3600)
	DIM t4 = INT((tm - 3600 * t3) / 60)
	DIM t5 = INT(tm - 3600 * t3 - 60 * t4)
	DIM t[] = t0, t1, t2, t3, t4, t5
	
	RESULT = SLICE(t)
FEND

//////////////////////////////////////////////////
// 【引数】
//   JC : ユリウス世紀 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION longitudeSun(JC)
	DIM A[18] = 0.0004, 0.0004, 0.0005, 0.0005, 0.0006, 0.0007, 0.0007, 0.0007, 0.0013, 0.0015, 0.0018, 0.0018, 0.0020, 0.0200, -0.0048*JC, 1.9147, 36000.7695*JC, 280.4659
	DIM k[18] = 31557.0, 29930.0, 2281.0, 155.0, 33718.0, 9038.0, 3035.0, 65929.0, 22519.0, 45038.0, 445267.0, 19.0, 32964.0, 71998.1, 35999.05, 35999.05, 0, 0
	DIM θ0[18] = 161.0, 48.0, 221.0, 118.0, 316.0, 64.0, 110.0, 45.0, 352.0, 254.0, 208.0, 159.0, 158.0, 265.1, 267.52, 267.52, 0, 0
	DIM λsun[18]
	FOR n = 0 TO 15
		DIM ang = normalizeAngle(k[n] * JC + θ0[n])
		λsun[n] = A[n] * COS(degToRad(ang))
	NEXT
	λsun[16] = normalizeAngle(A[16])
	λsun[17] = normalizeAngle(A[17])
	RESULT = normalizeAngle(CALCARRAY(λsun, CALC_ADD))
FEND

//////////////////////////////////////////////////
// 【引数】
//   deg : 度数法 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION normalizeAngle(deg)
	SELECT TRUE
		CASE deg >= 360
			deg = deg - INT(deg / 360) * 360
		CASE deg < 0
			deg = deg + INT(ABS(deg / 360) + 1) * 360
	SELEND
	RESULT = deg
FEND

//////////////////////////////////////////////////
// 【引数】
//   str : 正規表現による検索の対象となる文字列 
//   Pattern : 正規表現で使用するパターンを設定 
//   IgnoreCase : 大文字・小文字を区別しない場合はTrue、区別する場合はFalse 
//   Global : 文字列全体を検索する場合はTrue、しない場合はFalse 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION reExecute(str, Pattern, IgnoreCase = TRUE, Global = TRUE)
	DIM re = CREATEOLEOBJ("VBScript.RegExp")
	re.Pattern = Pattern
	re.IgnoreCase = IgnoreCase
	re.Global = Global
	RESULT = re.Execute(str)
FEND

//////////////////////////////////////////////////
// 【引数】
//   str1 : 置換される文字列 
//   str2 : 置換後の文字列 
//   Pattern : 置換する文字列のパターン 
//   IgnoreCase : 大文字・小文字を区別しない場合はTrue、区別する場合はFalse 
//   Global : 文字列全体を検索する場合はTrue、しない場合はFalse 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION reReplace(str1, str2, Pattern, IgnoreCase = TRUE, Global = TRUE)
	DIM re = CREATEOLEOBJ("VBScript.RegExp")
	re.Pattern = Pattern
	re.IgnoreCase = IgnoreCase
	re.Global = Global
	RESULT = re.Replace(str1, str2)
FEND

//////////////////////////////////////////////////
// 【引数】
//   str : 正規表現による検索の対象となる文字列 
//   Pattern : 正規表現で使用するパターンを設定 
//   IgnoreCase : 大文字・小文字を区別しない場合はTrue、区別する場合はFalse 
//   Global : 文字列全体を検索する場合はTrue、しない場合はFalse 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION reTest(str, Pattern, IgnoreCase = TRUE, Global = TRUE)
	DIM re = CREATEOLEOBJ("VBScript.RegExp")
	re.Pattern = Pattern
	re.IgnoreCase = IgnoreCase
	re.Global = Global
	RESULT = re.Test(str)
FEND

//////////////////////////////////////////////////
// 【引数】
//   inputs : 繰り返す文字列 
//   multiplier : inputsを繰り返す回数 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION strRepeat(inputs, multiplier)
	DIM res = ""
	FOR n = 1 TO multiplier
		res = res + inputs
	NEXT
	RESULT = res
FEND

//////////////////////////////////////////////////
// 【引数】
//   serial : シリアル値 
//   format : フォーマット 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION text(serial, format, hour12 = FALSE)
	HASHTBL startDate
	startDate["明治"] = "1868/01/25"
	startDate["大正"] = "1912/07/30"
	startDate["昭和"] = "1926/12/25"
	startDate["平成"] = "1989/01/08"
	startDate["令和"] = "2019/05/01"
	
	DIM baseDate = "1899/12/30"
	
	SELECT TRUE
		CASE reTest(format, "\[h+\]")
			Matches = reExecute(format, "\[(h+)\]")
			DIM hour = iif(hour12, Hour(serial) MOD 12, Hour(serial))
			RESULT = text(hour, strRepeat("0", LENGTH(Matches.Item(0).SubMatches(0))))
		CASE reTest(format, "^h+$")
			Matches = reExecute(format, "^(h+)$")
			hour = iif(hour12, Hour(serial) MOD 12, Hour(serial))
			RESULT = text(hour MOD 24, strRepeat("0", LENGTH(Matches.Item(0).SubMatches(0))))
		CASE reTest(format, "\[m+\]")
			Matches = reExecute(format, "\[(m+)\]")
			RESULT = text(serial * 1440, strRepeat("0", LENGTH(Matches.Item(0).SubMatches(0))))
		CASE format = "m"
			GETTIME(serial, baseDate)
			RESULT = text(G_TIME_MM, "0")
		CASE format = "mm"
			GETTIME(serial, baseDate)
			RESULT = G_TIME_MM2
		CASE format = "n"
			GETTIME(serial, baseDate)
			RESULT = G_TIME_NN
		CASE format = "nn"
			GETTIME(serial, baseDate)
			RESULT = G_TIME_NN2
		CASE format = "s"
			GETTIME(serial, baseDate)
			RESULT = text(G_TIME_SS, "0")
		CASE format = "ss"
			GETTIME(serial, baseDate)
			RESULT = G_TIME_SS2
		CASE format = "yyyy"
			GETTIME(serial, baseDate)
			RESULT = G_TIME_YY4
		CASE format = "yy"
			GETTIME(serial, baseDate)
			RESULT = COPY(G_TIME_YY4, 3, 2)
		CASE format = "e"
			SELECT TRUE
				CASE dateDiff("d", startDate["令和"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(serial, "yyyy") - 2018
				CASE dateDiff("d", startDate["平成"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(serial, "yyyy") - 1988
				CASE dateDiff("d", startDate["昭和"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(serial, "yyyy") - 1925
				CASE dateDiff("d", startDate["大正"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(serial, "yyyy") - 1911
				CASE dateDiff("d", startDate["明治"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(serial, "yyyy") - 1867
			SELEND
		CASE format = "ee"
			SELECT TRUE
				CASE dateDiff("d", startDate["令和"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(text(serial, "yyyy") - 2018, "00")
				CASE dateDiff("d", startDate["平成"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(text(serial, "yyyy") - 1988, "00")
				CASE dateDiff("d", startDate["昭和"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(text(serial, "yyyy") - 1925, "00")
				CASE dateDiff("d", startDate["大正"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(text(serial, "yyyy") - 1911, "00")
				CASE dateDiff("d", startDate["明治"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(text(serial, "yyyy") - 1867, "00")
			SELEND
		CASE format = "g"
			SELECT TRUE
				CASE dateDiff("d", startDate["令和"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "R"
				CASE dateDiff("d", startDate["平成"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "H"
				CASE dateDiff("d", startDate["昭和"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "S"
				CASE dateDiff("d", startDate["大正"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "T"
				CASE dateDiff("d", startDate["明治"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "M"
			SELEND
		CASE format = "gg"
			RESULT = COPY(text(serial, "ggg"), 1, 1)
		CASE format = "ggg"
			SELECT TRUE
				CASE dateDiff("d", startDate["令和"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "令和"
				CASE dateDiff("d", startDate["平成"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "平成"
				CASE dateDiff("d", startDate["昭和"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "昭和"
				CASE dateDiff("d", startDate["大正"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "大正"
				CASE dateDiff("d", startDate["明治"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "明治"
			SELEND
		CASE format = "mmmmm"
			RESULT = COPY(text(serial, "mmmm"), 1, 1)
		CASE format = "mmmm"
			DIM month[] = "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"
			RESULT = month[text(serial, "m") - 1]
		CASE format = "mmm"
			RESULT = COPY(text(serial, "mmmm"), 1, 3)
		CASE format = "dd"
			GETTIME(serial, baseDate)
			RESULT = text(G_TIME_DD2, "00")
		CASE format = "d"
			GETTIME(serial, baseDate)
			RESULT = text(G_TIME_DD, "0")
		CASE reTest(format, "^[ad]{3,4}$")
			Matches = reExecute(format, "([ad]{3,4})")
			GETTIME(serial, baseDate)
			RESULT = getWeekdayName(G_TIME_WW, Matches.Item(0).SubMatches(0))
		CASE reTest(format, "(0+\.?0+)?%")
			Matches = reExecute(format, "(0+\.?0+)?%")
			RESULT = text(serial * 100, Matches.Item(0).SubMatches(0)) + "%"
		CASE reTest(format, "^\[DBNum\d{1,4}\](.*?)$")
			Matches = reExecute(format, "^\[DBNum(\d{1,4})\](.*?)$")
			DIM value = VAL(Matches.Item(0).SubMatches(0))
			DIM sss = text(serial, Matches.Item(0).SubMatches(1))
			Matches = reExecute(sss, "(\D+)?(\d+)(\D+)?")
			DIM res = ""
			FOR m = 0 TO Matches.Count - 1
				serial = Matches.Item(m).SubMatches(1)
				SELECT value
					CASE 1, 2
						DIM n[][9] = "〇", "一", "二", "三", "四", "五", "六", "七", "八", "九", + _
										"", "壱", "弐", "参", "四", "伍", "六", "七", "八", "九"
						DIM a[][3] = "", "十", "百", "千", + _
										"", "拾", "百", "阡"
						DIM b[][3] = "", "万", "億", "兆", + _
										"", "萬", "億", "兆"
						DIM r = ""
						DIM j = 0
						type = value - 1
						REPEAT
							DIM str = ""
							DIM n4 = serial MOD 10000
							FOR i = LENGTH(n4) TO 1 STEP -1
								s = COPY(n4, i, 1)
								IFB s = 1 AND a[type][LENGTH(n4)-i] <> "" THEN
									str = IIF(s, a[type][LENGTH(n4)-i], "") + str
								ELSE	
									str = n[type][s] + IIF(s, a[type][LENGTH(n4)-i], "") + str
								ENDIF
							NEXT
							IF str <> "" THEN r = str + b[type][j] + r
							j = j + 1
							serial = INT(serial / 10000)
						UNTIL serial = 0
						res = res + Matches.Item(m).SubMatches(0) + r + Matches.Item(m).SubMatches(2)
					CASE 3
						res = res + Matches.Item(m).SubMatches(0) + STRCONV(serial, SC_FULLWIDTH) + Matches.Item(m).SubMatches(2)
					CASE 4
						res = res + Matches.Item(m).SubMatches(0) + STRCONV(serial, SC_HALFWIDTH) + Matches.Item(m).SubMatches(2)
				SELEND
			NEXT
			RESULT = res
		CASE reTest(format, "^(.*?)(AM\/PM|am\/pm|A\/P|a\/p)(.*?)$")
			Matches = reExecute(format, "^(.*?)(AM\/PM|am\/pm|A\/P|a\/p)(.*?)$")
			DIM array = SPLIT(Matches.Item(0).SubMatches(1), "/")
			ampm = array[IIF(serial - INT(serial) >= 0.5, 1, 0)]
			hour12 = TRUE
			res = ""
			WITH Matches.Item(0)
				res = text(serial, .SubMatches(0), hour12) + ampm + text(serial, .SubMatches(2), hour12)
			ENDWITH
			RESULT = res
		CASE reTest(format, "([^ymdagehns]{0,})?(([ymdagehns])\3{0,})([^ymdagehns]+)?")
			Matches = reExecute(format, "([^ymdagehns]{0,})?(([ymdagehns])\3{0,})([^ymdagehns]+)?")
			FOR n = 0 TO Matches.Count - 1
				IF n = 0 THEN res = Matches.Item(n).SubMatches(0)
			NEXT
			FOR n = 0 TO Matches.Count - 1
				WITH Matches.Item(n)
					res = res + text(serial, .SubMatches(1), hour12) + .SubMatches(3)
				ENDWITH
			NEXT
			RESULT = res
		CASE format = "0/0"
			DIM separator = POS(".", serial)
			DIM g = 0
			IFB separator <> 0 THEN
				DIM keta = LENGTH(serial)
				DIM shift = POWER(10, keta - separator)
				IFB shift >= POWER(10, 15) THEN
					DIM position = 0
					FOR i = 0 TO 14
						IFB serial * POWER(10, i) - serial >= 1 THEN
							position = i
							BREAK
						ENDIF
					NEXT
					tmp = serial * POWER(10, position)
					FOR i = 1 TO 15
						r = (tmp * POWER(10, i)) / serial - (tmp / serial)
						a1 = tmp * POWER(10, i) - tmp
						IF a1 = INT(a1) THEN BREAK 
					NEXT
					DIM frac[] = a1, r
					g = GCD(frac)
					RESULT = (a1/g) + "/" + (r/g)
				ELSE
					DIM molecule = serial * shift	// 分子
					DIM denominator = shift		// 分母
					DIM nums[] = molecule, denominator
					g = GCD(nums)
					molecule = molecule / g
					denominator = denominator / g
					RESULT = molecule + "/" + denominator
				ENDIF
			ELSE
				RESULT = serial + "/1"
			ENDIF
		CASE reTest(format, "(0+)\.?(0+)?") AND UBound(SPLIT(format, ".")) <= 1 
			Matches = reExecute(format, "(0+)\.?(0+)?")
			len1 = LENGTH(Matches.Item(0).SubMatches(0))
			len2 = LENGTH(Matches.Item(0).SubMatches(1))
			DIM arr[] = LENGTH(INT(serial)), len1
			IFB POS(".", format) THEN
				RESULT = REPLACE(FORMAT(serial, CALCARRAY(arr, CALC_MAX) + len2 + 1, len2), " ", "0")
			ELSE
				RESULT = REPLACE(FORMAT(serial, CALCARRAY(arr, CALC_MAX)), " ", "0")
			ENDIF
	SELEND
FEND

//////////////////////////////////////////////////
// 【引数】
//   arrayname : 上限値を求める配列の名前 
//   dimension : 返す次元を示す整数 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION UBound(arrayname[], dimension = 1)
	RESULT = EVAL("RESIZE(arrayname" + strRepeat("[0]", dimension - 1) + ")")
FEND

//////////////////////////////////////////////////
// 【引数】
//   year : 年 
//   month : 月 
//   day : 日 
//   hour : 時 
//   minute : 分 
//   second : 秒 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION YMDToJD(year, month, day, hour = 0, minute = 0, second = 0)
	year = VAL(year);	month = VAL(month);		day = VAL(day);
	hour = VAL(hour);	minute = VAL(minute);	second = VAL(second)
	IFB month < 3 THEN
		year = year - 1
		month = month + 12
	ENDIF
	DIM JD = INT(year * 365.25)
	JD = JD + INT(year / 400)
	JD = JD - INT(year / 100)
	JD = JD + INT((month - 2) * 30.59)
	JD = JD + 1721088
	JD = JD + day
	DIM t = second / 3600
	t = t + minute / 60
	t = t + hour
	t = t / 24
	JD = JD + t
	RESULT = JD
FEND
結果
CSV
彼岸入り:   2020/03/17
春分の日:   2020/03/20
彼岸明け:   2020/03/23
使用関数

今年の秋彼岸の日付を求める

翌年1月1日の直前の太陽黄経180度の日付(秋分の日)を求め、その日を中日とする前後3日を合わせた7日間を求める。

UWSC
GETTIME()
DIM year = G_TIME_YY + 1
DIM month = 1
DIM day = 1

REPEAT
	DIM chuki = chuki(YMDToJD(year, month, day))
	DIM d = JDToYMD(chuki[0])
	year = d[0]
	month = d[1]
	day = d[2]
UNTIL normalizeAngle(ROUND(chuki[1])) = 180

RESIZE(d, 2)
arrayMap("text(%val%, <#DBL>00<#DBL>)", d)
date = JOIN(d, "/")
PRINT "彼岸入り:" + dateAdd("d", -3, date)
PRINT "秋分の日:" + date
PRINT "彼岸明け:" + dateAdd("d", 3, date)

//////////////////////////////////////////////////
// 【引数】
//   JD : ユリウス日 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION chuki(JD)
	JD = JD - 9/24
	DIM t = (JD + 0.5 - 2451545) / 36525
	DIM λsun = longitudeSun(t)
	DIM λsun0 = 30 * INT(λsun/30)
	REPEAT
		t = (JD + 0.5 - 2451545) / 36525
		λsun = longitudeSun(t)
		DIM Δλ = λsun - λsun0
			SELECT TRUE
				CASE Δλ > 180
					Δλ = Δλ - 360
				CASE Δλ < -180
					Δλ = Δλ + 180
			SELEND
		DIM Δt = Δλ * 365.2 / 360
		JD = JD - Δt
	UNTIL Δt <= 1/86400
	JD = JD + 9/24
	DIM arr[1] = JD, λsun
	RESULT = SLICE(arr)
FEND

//////////////////////////////////////////////////
// 【引数】
//   interval : 加算する時間間隔を表す文字列式(yyyy:年、m:月、d:日、ww:週、h:時、n:分、s:秒) 
//   num : dateに加算する値。未来は正、過去は負で指定 
//   date : 時間間隔を加算する日付 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION dateAdd(interval, num, date)
	DIM year, month, day, d
	GETTIME(0, date)
	DIM time = G_TIME_HH2 + ":" + G_TIME_NN2 + ":" + G_TIME_SS2
	SELECT interval
		CASE "yyyy"
			d = (G_TIME_YY + num) + "/" + G_TIME_MM2 + "/" + G_TIME_DD2
			IF time <> "00:00:00" THEN d = d + " " + time
		CASE "m"
			IFB num > 0 THEN
				year = G_TIME_YY + INT((G_TIME_MM + num) / 12)
				month = REPLACE(FORMAT(((G_TIME_MM + num) MOD 12), 2), " ", "0")
			ELSE
				year = G_TIME_YY + CEIL((G_TIME_MM + num) / 12 - 1)
				month = REPLACE(FORMAT(G_TIME_MM - (ABS(num) MOD 12), 2), " ", "0")
			ENDIF
			IF month = "00" THEN month = 12
			day = G_TIME_DD2
			d = "" + year + month + day
			IFB !isDate(d) THEN
				d = year + "/" + month + "/" + "01"
				d = getEndOfMonth(d)
			ELSE
				d = year + "/" + month + "/" + day
			ENDIF
			IF time <> "00:00:00" THEN d = d + " " + time
		CASE "d"
			t = GETTIME(num, date)
			d = G_TIME_YY4 + "/" + G_TIME_MM2 + "/" + G_TIME_DD2 + IIF(t MOD 86400, " " + G_TIME_HH2 + ":" + G_TIME_NN2 + ":" + G_TIME_SS2, "")
		CASE "ww"
			t = GETTIME(num * 7, date)
			d = G_TIME_YY4 + "/" + G_TIME_MM2 + "/" + G_TIME_DD2 + IIF(t MOD 86400, " " + G_TIME_HH2 + ":" + G_TIME_NN2 + ":" + G_TIME_SS2, "")
		CASE "h"
			t = GETTIME(num / 24, date)
			d = G_TIME_YY4 + "/" + G_TIME_MM2 + "/" + G_TIME_DD2 + IIF(t MOD 86400, " " + G_TIME_HH2 + ":" + G_TIME_NN2 + ":" + G_TIME_SS2, "")
		CASE "n"
			t = GETTIME(num / 1440, date)
			d = G_TIME_YY4 + "/" + G_TIME_MM2 + "/" + G_TIME_DD2 + IIF(t MOD 86400, " " + G_TIME_HH2 + ":" + G_TIME_NN2 + ":" + G_TIME_SS2, "")
		CASE "s"
			t = GETTIME(num / 86400, date)
			d = G_TIME_YY4 + "/" + G_TIME_MM2 + "/" + G_TIME_DD2 + IIF(t MOD 86400, " " + G_TIME_HH2 + ":" + G_TIME_NN2 + ":" + G_TIME_SS2, "")
	SELEND
	RESULT = d
FEND

//////////////////////////////////////////////////
// 【引数】
//   interval : 時間単位(yyyy︰年、q:四半期、m︰月、d︰日、w:週日、ww:週、h:時、n:分、s:秒) 
//   date1 : 日時1 
//   date2 : 日時2 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION dateDiff(interval, date1, date2)
	DIM y1, y2, m1, m2, d1, d2, d
	SELECT interval
		CASE "yyyy"
			GETTIME(0, date1)
			y1 = G_TIME_YY
			GETTIME(0, date2)
			y2 = G_TIME_YY
			d = y2 - y1
		CASE "q"
			GETTIME(0, date1)
			y1 = G_TIME_YY
			m1 = G_TIME_MM
			GETTIME(0, date2)
			y2 = G_TIME_YY
			m2 = G_TIME_MM
			d = y2 * 4 + CEIL(m2/3) - (y1 * 4 + CEIL(m1/3))
		CASE "m"
			GETTIME(0, date1)
			y1 = G_TIME_YY
			m1 = G_TIME_MM
			GETTIME(0, date2)
			y2 = G_TIME_YY
			m2 = G_TIME_MM
			d = (y2 - y1) * 12 + m2 - m1
		CASE "d"
			d1 = GETTIME(0, date1)
			d2 = GETTIME(0, date2)
			d = (d2 - d1) / 86400
		CASE "w"
			d = INT(dateDiff("d", date1, date2) / 7)
		CASE "ww"
			date1 = dateAdd("d", -1 * getWeekday(date1), date1)
			d = INT(dateDiff("d", date1, date2) / 7)
		CASE "h"
			d = dateDiff("d", date1, date2) * 24
		CASE "n"
			d = dateDiff("d", date1, date2) * 1440
		CASE "s"
			d = dateDiff("d", date1, date2) * 86400
	SELEND
	RESULT = d
FEND

//////////////////////////////////////////////////
// 【引数】
//   deg : 角度(度数法) 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION degToRad(deg)
	RESULT = deg * (3.14159265358979 / 180)
FEND

//////////////////////////////////////////////////
// 【引数】
//   array : 最大公約数を求める数値を格納した配列 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION GCD(array[])
	DIM c = LENGTH(array)
	DIM rem = array[c-1] MOD array[c-2]
	IFB rem = 0 THEN
		IFB LENGTH(array) = 2 THEN
			RESULT = array[c-2]
			EXIT
		ENDIF
		RESIZE(array, c-2)
		RESULT = GCD(array)
		EXIT
	ENDIF
	array[c-1] = array[c-2]
	array[c-2] = rem
	RESULT = GCD(array)
FEND

//////////////////////////////////////////////////
// 【引数】
//   date : 日付(”YYYYMMDD” or “YYYY/MM/DD” or “YYYY-MM-DD” or “YYYYMMDDHHNNSS” or “YYYY/MM/DD HH:NN:SS”) 
//   m : 第一引数の指定日からプラスマイナスm月とする 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION getEndOfMonth(date, m = 0)
	date = dateAdd("m", m + 1, date)
	GETTIME(0, date)
	GETTIME(-G_TIME_DD, date)
	RESULT = G_TIME_YY4 + "/" + G_TIME_MM2 + "/" + G_TIME_DD2
FEND

//////////////////////////////////////////////////
// 【引数】
//   date : (”YYYYMMDD” or “YYYY/MM/DD” or “YYYY-MM-DD” or “YYYYMMDDHHNNSS” or “YYYY/MM/DD HH:NN:SS”) 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION getWeekday(date)
	GETTIME(0, date)
	RESULT = G_TIME_WW
FEND

//////////////////////////////////////////////////
// 【引数】
//   数値 : GETTIMEで取得した曜日の番号(G_TIME_WW=0:日曜….6:土曜) 
//   フォーマット : 以下のアルファベットは数値で指定した対応する曜日に置き換えられます。(aaa : 日〜土、aaaa : 日曜日〜土曜日、ddd : Sun〜Sat、dddd : Sunday〜Saturday) 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION getWeekdayName(num, format = "aaa")
	DIM re = CREATEOLEOBJ("VBScript.RegExp")
	DIM aaa[] = "日", "月", "火", "水", "木", "金", "土";
	DIM aaaa[] = "日曜日", "月曜日", "火曜日", "水曜日", "木曜日", "金曜日", "土曜日";
	DIM ddd[] = "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat";
	DIM dddd[] = "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday";
	match = reExecute(format, "(a|d)+")
	type = match.Item(0).Value
	RESULT = reReplace(format, EVAL(type + "[" + num + "]"), type)
FEND

//////////////////////////////////////////////////
// 【引数】
//   serial : 時間を表すシリアル値を指定 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION Hour(serial)
	RESULT = INT(serial * 24) MOD 24
FEND

//////////////////////////////////////////////////
// 【引数】
//   expr : 評価する式 
//   truepart : 評価した式がTrueのときに返す値 
//   falsepart : 評価した式がFalseのときに返す値 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION IIF(expr, truepart, falsepart)
	IFB EVAL(expr) THEN
		RESULT = truepart
	ELSE
		RESULT = falsepart
	ENDIF
FEND

//////////////////////////////////////////////////
// 【引数】
//   date : 存在するかを調べる日付文字列。YYYYMMDD or YYYY/MM/DD or YYYY-MM-DDのいずれかの形式。 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION isDate(date)
	TRY
		GETTIME(0, date)
		RESULT = TRUE
	EXCEPT
		RESULT = FALSE
	ENDTRY
FEND

//////////////////////////////////////////////////
// 【引数】
//   JD : ユリウス日 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION JDToYMD(JD)
	DIM x0 = INT(JD + 68570)
	DIM x1 = INT(x0 / 36524.25)
	DIM x2 = x0 - INT(36524.25 * x1 + 0.75)
	DIM x3 = INT((x2 + 1) / 365.2425)
	DIM x4 = x2 - INT(365.25 * x3) + 31
	DIM x5 = INT(INT(x4) / 30.59)
	DIM x6 = INT(INT(x5) / 11)
	
	DIM t2 = x4 - INT(30.59 * x5)
	DIM t1 = x5 - 12 * x6 + 2
	DIM t0 = 100 * (x1 - 49) + x3 + x6
	
	IFB t1 = 2 AND t2 > 28 THEN
		SELECT TRUE
			CASE t0 MOD 100 = 0 AND t0 MOD 400 = 0
				t2 = 29
			CASE t0 MOD 4 = 0
				t2 = 29
			DEFAULT
				t2 = 28
		SELEND
	ENDIF
	
	DIM tm = 86400 * (JD - INT(JD))
	DIM t3 = INT(tm / 3600)
	DIM t4 = INT((tm - 3600 * t3) / 60)
	DIM t5 = INT(tm - 3600 * t3 - 60 * t4)
	DIM t[] = t0, t1, t2, t3, t4, t5
	
	RESULT = SLICE(t)
FEND

//////////////////////////////////////////////////
// 【引数】
//   JC : ユリウス世紀 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION longitudeSun(JC)
	DIM A[18] = 0.0004, 0.0004, 0.0005, 0.0005, 0.0006, 0.0007, 0.0007, 0.0007, 0.0013, 0.0015, 0.0018, 0.0018, 0.0020, 0.0200, -0.0048*JC, 1.9147, 36000.7695*JC, 280.4659
	DIM k[18] = 31557.0, 29930.0, 2281.0, 155.0, 33718.0, 9038.0, 3035.0, 65929.0, 22519.0, 45038.0, 445267.0, 19.0, 32964.0, 71998.1, 35999.05, 35999.05, 0, 0
	DIM θ0[18] = 161.0, 48.0, 221.0, 118.0, 316.0, 64.0, 110.0, 45.0, 352.0, 254.0, 208.0, 159.0, 158.0, 265.1, 267.52, 267.52, 0, 0
	DIM λsun[18]
	FOR n = 0 TO 15
		DIM ang = normalizeAngle(k[n] * JC + θ0[n])
		λsun[n] = A[n] * COS(degToRad(ang))
	NEXT
	λsun[16] = normalizeAngle(A[16])
	λsun[17] = normalizeAngle(A[17])
	RESULT = normalizeAngle(CALCARRAY(λsun, CALC_ADD))
FEND

//////////////////////////////////////////////////
// 【引数】
//   deg : 度数法 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION normalizeAngle(deg)
	SELECT TRUE
		CASE deg >= 360
			deg = deg - INT(deg / 360) * 360
		CASE deg < 0
			deg = deg + INT(ABS(deg / 360) + 1) * 360
	SELEND
	RESULT = deg
FEND

//////////////////////////////////////////////////
// 【引数】
//   str : 正規表現による検索の対象となる文字列 
//   Pattern : 正規表現で使用するパターンを設定 
//   IgnoreCase : 大文字・小文字を区別しない場合はTrue、区別する場合はFalse 
//   Global : 文字列全体を検索する場合はTrue、しない場合はFalse 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION reExecute(str, Pattern, IgnoreCase = TRUE, Global = TRUE)
	DIM re = CREATEOLEOBJ("VBScript.RegExp")
	re.Pattern = Pattern
	re.IgnoreCase = IgnoreCase
	re.Global = Global
	RESULT = re.Execute(str)
FEND

//////////////////////////////////////////////////
// 【引数】
//   str1 : 置換される文字列 
//   str2 : 置換後の文字列 
//   Pattern : 置換する文字列のパターン 
//   IgnoreCase : 大文字・小文字を区別しない場合はTrue、区別する場合はFalse 
//   Global : 文字列全体を検索する場合はTrue、しない場合はFalse 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION reReplace(str1, str2, Pattern, IgnoreCase = TRUE, Global = TRUE)
	DIM re = CREATEOLEOBJ("VBScript.RegExp")
	re.Pattern = Pattern
	re.IgnoreCase = IgnoreCase
	re.Global = Global
	RESULT = re.Replace(str1, str2)
FEND

//////////////////////////////////////////////////
// 【引数】
//   str : 正規表現による検索の対象となる文字列 
//   Pattern : 正規表現で使用するパターンを設定 
//   IgnoreCase : 大文字・小文字を区別しない場合はTrue、区別する場合はFalse 
//   Global : 文字列全体を検索する場合はTrue、しない場合はFalse 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION reTest(str, Pattern, IgnoreCase = TRUE, Global = TRUE)
	DIM re = CREATEOLEOBJ("VBScript.RegExp")
	re.Pattern = Pattern
	re.IgnoreCase = IgnoreCase
	re.Global = Global
	RESULT = re.Test(str)
FEND

//////////////////////////////////////////////////
// 【引数】
//   inputs : 繰り返す文字列 
//   multiplier : inputsを繰り返す回数 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION strRepeat(inputs, multiplier)
	DIM res = ""
	FOR n = 1 TO multiplier
		res = res + inputs
	NEXT
	RESULT = res
FEND

//////////////////////////////////////////////////
// 【引数】
//   serial : シリアル値 
//   format : フォーマット 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION text(serial, format, hour12 = FALSE)
	HASHTBL startDate
	startDate["明治"] = "1868/01/25"
	startDate["大正"] = "1912/07/30"
	startDate["昭和"] = "1926/12/25"
	startDate["平成"] = "1989/01/08"
	startDate["令和"] = "2019/05/01"
	
	DIM baseDate = "1899/12/30"
	
	SELECT TRUE
		CASE reTest(format, "\[h+\]")
			Matches = reExecute(format, "\[(h+)\]")
			DIM hour = iif(hour12, Hour(serial) MOD 12, Hour(serial))
			RESULT = text(hour, strRepeat("0", LENGTH(Matches.Item(0).SubMatches(0))))
		CASE reTest(format, "^h+$")
			Matches = reExecute(format, "^(h+)$")
			hour = iif(hour12, Hour(serial) MOD 12, Hour(serial))
			RESULT = text(hour MOD 24, strRepeat("0", LENGTH(Matches.Item(0).SubMatches(0))))
		CASE reTest(format, "\[m+\]")
			Matches = reExecute(format, "\[(m+)\]")
			RESULT = text(serial * 1440, strRepeat("0", LENGTH(Matches.Item(0).SubMatches(0))))
		CASE format = "m"
			GETTIME(serial, baseDate)
			RESULT = text(G_TIME_MM, "0")
		CASE format = "mm"
			GETTIME(serial, baseDate)
			RESULT = G_TIME_MM2
		CASE format = "n"
			GETTIME(serial, baseDate)
			RESULT = G_TIME_NN
		CASE format = "nn"
			GETTIME(serial, baseDate)
			RESULT = G_TIME_NN2
		CASE format = "s"
			GETTIME(serial, baseDate)
			RESULT = text(G_TIME_SS, "0")
		CASE format = "ss"
			GETTIME(serial, baseDate)
			RESULT = G_TIME_SS2
		CASE format = "yyyy"
			GETTIME(serial, baseDate)
			RESULT = G_TIME_YY4
		CASE format = "yy"
			GETTIME(serial, baseDate)
			RESULT = COPY(G_TIME_YY4, 3, 2)
		CASE format = "e"
			SELECT TRUE
				CASE dateDiff("d", startDate["令和"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(serial, "yyyy") - 2018
				CASE dateDiff("d", startDate["平成"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(serial, "yyyy") - 1988
				CASE dateDiff("d", startDate["昭和"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(serial, "yyyy") - 1925
				CASE dateDiff("d", startDate["大正"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(serial, "yyyy") - 1911
				CASE dateDiff("d", startDate["明治"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(serial, "yyyy") - 1867
			SELEND
		CASE format = "ee"
			SELECT TRUE
				CASE dateDiff("d", startDate["令和"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(text(serial, "yyyy") - 2018, "00")
				CASE dateDiff("d", startDate["平成"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(text(serial, "yyyy") - 1988, "00")
				CASE dateDiff("d", startDate["昭和"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(text(serial, "yyyy") - 1925, "00")
				CASE dateDiff("d", startDate["大正"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(text(serial, "yyyy") - 1911, "00")
				CASE dateDiff("d", startDate["明治"], text(serial, "yyyy/mm/dd")) >= 0
					RESULT = text(text(serial, "yyyy") - 1867, "00")
			SELEND
		CASE format = "g"
			SELECT TRUE
				CASE dateDiff("d", startDate["令和"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "R"
				CASE dateDiff("d", startDate["平成"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "H"
				CASE dateDiff("d", startDate["昭和"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "S"
				CASE dateDiff("d", startDate["大正"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "T"
				CASE dateDiff("d", startDate["明治"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "M"
			SELEND
		CASE format = "gg"
			RESULT = COPY(text(serial, "ggg"), 1, 1)
		CASE format = "ggg"
			SELECT TRUE
				CASE dateDiff("d", startDate["令和"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "令和"
				CASE dateDiff("d", startDate["平成"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "平成"
				CASE dateDiff("d", startDate["昭和"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "昭和"
				CASE dateDiff("d", startDate["大正"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "大正"
				CASE dateDiff("d", startDate["明治"], text(serial, "yyyy/mm/dd")) >= 0;		RESULT = "明治"
			SELEND
		CASE format = "mmmmm"
			RESULT = COPY(text(serial, "mmmm"), 1, 1)
		CASE format = "mmmm"
			DIM month[] = "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"
			RESULT = month[text(serial, "m") - 1]
		CASE format = "mmm"
			RESULT = COPY(text(serial, "mmmm"), 1, 3)
		CASE format = "dd"
			GETTIME(serial, baseDate)
			RESULT = text(G_TIME_DD2, "00")
		CASE format = "d"
			GETTIME(serial, baseDate)
			RESULT = text(G_TIME_DD, "0")
		CASE reTest(format, "^[ad]{3,4}$")
			Matches = reExecute(format, "([ad]{3,4})")
			GETTIME(serial, baseDate)
			RESULT = getWeekdayName(G_TIME_WW, Matches.Item(0).SubMatches(0))
		CASE reTest(format, "(0+\.?0+)?%")
			Matches = reExecute(format, "(0+\.?0+)?%")
			RESULT = text(serial * 100, Matches.Item(0).SubMatches(0)) + "%"
		CASE reTest(format, "^\[DBNum\d{1,4}\](.*?)$")
			Matches = reExecute(format, "^\[DBNum(\d{1,4})\](.*?)$")
			DIM value = VAL(Matches.Item(0).SubMatches(0))
			DIM sss = text(serial, Matches.Item(0).SubMatches(1))
			Matches = reExecute(sss, "(\D+)?(\d+)(\D+)?")
			DIM res = ""
			FOR m = 0 TO Matches.Count - 1
				serial = Matches.Item(m).SubMatches(1)
				SELECT value
					CASE 1, 2
						DIM n[][9] = "〇", "一", "二", "三", "四", "五", "六", "七", "八", "九", + _
										"", "壱", "弐", "参", "四", "伍", "六", "七", "八", "九"
						DIM a[][3] = "", "十", "百", "千", + _
										"", "拾", "百", "阡"
						DIM b[][3] = "", "万", "億", "兆", + _
										"", "萬", "億", "兆"
						DIM r = ""
						DIM j = 0
						type = value - 1
						REPEAT
							DIM str = ""
							DIM n4 = serial MOD 10000
							FOR i = LENGTH(n4) TO 1 STEP -1
								s = COPY(n4, i, 1)
								IFB s = 1 AND a[type][LENGTH(n4)-i] <> "" THEN
									str = IIF(s, a[type][LENGTH(n4)-i], "") + str
								ELSE	
									str = n[type][s] + IIF(s, a[type][LENGTH(n4)-i], "") + str
								ENDIF
							NEXT
							IF str <> "" THEN r = str + b[type][j] + r
							j = j + 1
							serial = INT(serial / 10000)
						UNTIL serial = 0
						res = res + Matches.Item(m).SubMatches(0) + r + Matches.Item(m).SubMatches(2)
					CASE 3
						res = res + Matches.Item(m).SubMatches(0) + STRCONV(serial, SC_FULLWIDTH) + Matches.Item(m).SubMatches(2)
					CASE 4
						res = res + Matches.Item(m).SubMatches(0) + STRCONV(serial, SC_HALFWIDTH) + Matches.Item(m).SubMatches(2)
				SELEND
			NEXT
			RESULT = res
		CASE reTest(format, "^(.*?)(AM\/PM|am\/pm|A\/P|a\/p)(.*?)$")
			Matches = reExecute(format, "^(.*?)(AM\/PM|am\/pm|A\/P|a\/p)(.*?)$")
			DIM array = SPLIT(Matches.Item(0).SubMatches(1), "/")
			ampm = array[IIF(serial - INT(serial) >= 0.5, 1, 0)]
			hour12 = TRUE
			res = ""
			WITH Matches.Item(0)
				res = text(serial, .SubMatches(0), hour12) + ampm + text(serial, .SubMatches(2), hour12)
			ENDWITH
			RESULT = res
		CASE reTest(format, "([^ymdagehns]{0,})?(([ymdagehns])\3{0,})([^ymdagehns]+)?")
			Matches = reExecute(format, "([^ymdagehns]{0,})?(([ymdagehns])\3{0,})([^ymdagehns]+)?")
			FOR n = 0 TO Matches.Count - 1
				IF n = 0 THEN res = Matches.Item(n).SubMatches(0)
			NEXT
			FOR n = 0 TO Matches.Count - 1
				WITH Matches.Item(n)
					res = res + text(serial, .SubMatches(1), hour12) + .SubMatches(3)
				ENDWITH
			NEXT
			RESULT = res
		CASE format = "0/0"
			DIM separator = POS(".", serial)
			DIM g = 0
			IFB separator <> 0 THEN
				DIM keta = LENGTH(serial)
				DIM shift = POWER(10, keta - separator)
				IFB shift >= POWER(10, 15) THEN
					DIM position = 0
					FOR i = 0 TO 14
						IFB serial * POWER(10, i) - serial >= 1 THEN
							position = i
							BREAK
						ENDIF
					NEXT
					tmp = serial * POWER(10, position)
					FOR i = 1 TO 15
						r = (tmp * POWER(10, i)) / serial - (tmp / serial)
						a1 = tmp * POWER(10, i) - tmp
						IF a1 = INT(a1) THEN BREAK 
					NEXT
					DIM frac[] = a1, r
					g = GCD(frac)
					RESULT = (a1/g) + "/" + (r/g)
				ELSE
					DIM molecule = serial * shift	// 分子
					DIM denominator = shift		// 分母
					DIM nums[] = molecule, denominator
					g = GCD(nums)
					molecule = molecule / g
					denominator = denominator / g
					RESULT = molecule + "/" + denominator
				ENDIF
			ELSE
				RESULT = serial + "/1"
			ENDIF
		CASE reTest(format, "(0+)\.?(0+)?") AND UBound(SPLIT(format, ".")) <= 1 
			Matches = reExecute(format, "(0+)\.?(0+)?")
			len1 = LENGTH(Matches.Item(0).SubMatches(0))
			len2 = LENGTH(Matches.Item(0).SubMatches(1))
			DIM arr[] = LENGTH(INT(serial)), len1
			IFB POS(".", format) THEN
				RESULT = REPLACE(FORMAT(serial, CALCARRAY(arr, CALC_MAX) + len2 + 1, len2), " ", "0")
			ELSE
				RESULT = REPLACE(FORMAT(serial, CALCARRAY(arr, CALC_MAX)), " ", "0")
			ENDIF
	SELEND
FEND

//////////////////////////////////////////////////
// 【引数】
//   arrayname : 上限値を求める配列の名前 
//   dimension : 返す次元を示す整数 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION UBound(arrayname[], dimension = 1)
	RESULT = EVAL("RESIZE(arrayname" + strRepeat("[0]", dimension - 1) + ")")
FEND

//////////////////////////////////////////////////
// 【引数】
//   year : 年 
//   month : 月 
//   day : 日 
//   hour : 時 
//   minute : 分 
//   second : 秒 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION YMDToJD(year, month, day, hour = 0, minute = 0, second = 0)
	year = VAL(year);	month = VAL(month);		day = VAL(day);
	hour = VAL(hour);	minute = VAL(minute);	second = VAL(second)
	IFB month < 3 THEN
		year = year - 1
		month = month + 12
	ENDIF
	DIM JD = INT(year * 365.25)
	JD = JD + INT(year / 400)
	JD = JD - INT(year / 100)
	JD = JD + INT((month - 2) * 30.59)
	JD = JD + 1721088
	JD = JD + day
	DIM t = second / 3600
	t = t + minute / 60
	t = t + hour
	t = t / 24
	JD = JD + t
	RESULT = JD
FEND
結果
CSV
彼岸入り:   2020/09/19
秋分の日:   2020/09/22
彼岸明け:   2020/09/25
使用関数

関連記事

YMDToJD関数 (自作関数)
グレゴリオ暦ユリウス日に変換します。
JDToYMD関数 (自作関数)
ユリウス日グレゴリオ暦に変換します。
GETTIME関数 (スクリプト関数)
GETTIMEは日時を取得する関数です。第二引数に指定された基準日から第一引数に指定した日数を加算した値を返します。戻値は2000年1月1日からの秒数です。関数実行後特殊変数に値がセットされ、その特殊変数から日付情報を取得できます。
getWeekdayName関数 (自作関数)
GETTIMEで取得した曜日の番号を指定したフォーマットで返します。
getYear関数 (自作関数)
指定された日付のを返します。
getMonth関数 (自作関数)
指定された日付のを返します。
getDay関数 (自作関数)
指定された日付のを返します。
getWeekday関数 (自作関数)
引数に指定された日付の曜日番号(0:日曜〜6:土曜)を返します。
isDate関数 (自作関数)
引数に指定した値が日付として認識できる場合はTrueを返します。認識できない場合はFalseを返します。
getEndOfMonth関数 (自作関数)
dateで指定された月の月末日を取得します。