Data.

1988-03-21T00:57:59.999989986Z

Date and time

Components

Year	1988
Month	3
Day	21
Hour	0
Minute	57
Second (integer part)	59
Second (fraction part)	0.999989986
Time zone offset	+00:00

Day (1988-03-21)

Notes

Calendars

Proleptic Gregorian calendar	AD	1988-03-21
	Japan	昭和63年3月21日
	Ryuukyuu	昭和63年3月21日
Proleptic Julian calendar	AD	1988-03-08
	Japan	昭和63年3月8日
	Ryuukyuu	昭和63年3月8日
旧暦Kyuureki (Japan)	AD	1988年2月4日
	Japan (北朝)	昭和63年2月4日
	Japan (南朝)	昭和63年2月4日
旧暦Kyuureki (Ryuukyuu)	AD	1988年2月4日
旧暦Kyuureki (Ryuukyuu)	Ryuukyuu	昭和63年2月4日

Holidays

Japan	振替休日

Properties

Yearless date	--03-21
Day of week (number)	1
Day of week (English)	Monday
Day of week (日本語)	月曜日
Kanshi	乙亥 (11₀, 12₁)
六曜 (Japan)	大安

Cast

Unix number	574909079.99999
Unix integer	574909079
HTML number	574909079999.99
HTML month number	218
Julian Day	2447241.54027778
Julian Day (integer of day)	2447242
Modified Julian Day	47241.0402777777
Rata Die	725817.040277778

Serializations

Global date and time string (time zone offset preserved)	1988-03-21T00:57:59.999989986Z
Global date and time string (UTC)	1988-03-21T00:57:59.999989986Z
Normalized forced-UTC global date and time string	1988-03-21T00:57:59.999989986Z
HTTP date	`Mon, 21 Mar 1988 00:57:59 GMT`
RSS2 date-time	`Mon, 21 Mar 1988 00:57:59 +0000`
`document.lastModified` format	`03/21/1988 00:57:59`
Local date and time string	1988-03-21T00:57:59.999989986
Normalized local date and time string	1988-03-21T00:57:59.999989986
Date string	1988-03-21
Date string with optional time	1988-03-21T00:57:59.999989986Z
Year string	1988
Month string	1988-03
Yearless date string	--03-21
Week string	1988-W12
Time string	00:57:59.999989986
Shortest time string	00:57:59.999989986

Your browser

`toString`
`toISOString`
`toDateString`
`toTimeString`
`toGMTString`
`toUTCString`
`toJSON`

`toLocaleString`	undefined
	`en`
	`en-US`
	`en-GB`
	`fr`
	`fr-CA`
	`es`
	`es-US`
	`it`
	`de`
	`ja`
	`ja-JP`
	`ja-JP-u-ca-japanese`
	`zh`
	`zh-CN`
	`zh-TW`
	`zh-HK`
	`zh-MO`
	`zh-SG`
	`zh-Hant`
	`zh-Hani`
	`zh-u-ca-chinese`
	`zh-TW-u-ca-roc`
	`ko`
	`th`
	`th-u-ca-buddhist-nu-thai`
	`th-u-nu-arab`
	`ar-EG`
	`ar-SA`
	`ar-SA-u-ca-islamic-nu-latn`
`toLocaleDateString`	undefined
`toLocaleTimeString`	undefined

Links

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365 days	1987-03-22T00:57:59.999989986Z	1989-03-21T00:57:59.999989986Z
30 days	1988-02-20T00:57:59.999989986Z	1988-04-20T00:57:59.999989986Z
7 days	1988-03-14T00:57:59.999989986Z	1988-03-28T00:57:59.999989986Z
Day	1988-03-20T00:57:59.999989986Z	1988-03-22T00:57:59.999989986Z
Hour	1988-03-20T23:57:59.999989986Z	1988-03-21T01:57:59.999989986Z
Minute	1988-03-21T00:56:59.999989986Z	1988-03-21T00:58:59.999989986Z