Data.

1990-12-31T22:59:59.999731779Z

Date and time

Components

Year	1990
Month	12
Day	31
Hour	22
Minute	59
Second (integer part)	59
Second (fraction part)	0.999731779
Time zone offset	+00:00

Day (1990-12-31)

Notes

Calendars

Proleptic Gregorian calendar	AD	1990-12-31
	Japan	平成2年12月31日
	Ryuukyuu	平成2年12月31日
Proleptic Julian calendar	AD	1990-12-18
	Japan	平成2年12月18日
	Ryuukyuu	平成2年12月18日
旧暦Kyuureki (Japan)	AD	1990年11月15日
	Japan (北朝)	平成2年11月15日
	Japan (南朝)	平成2年11月15日
旧暦Kyuureki (Ryuukyuu)	AD	1990年11月15日
旧暦Kyuureki (Ryuukyuu)	Ryuukyuu	平成2年11月15日

Holidays

Japan	Normal day

Properties

Yearless date	--12-31
Day of week (number)	1
Day of week (English)	Monday
Day of week (日本語)	月曜日
Kanshi	庚午 (6₀, 7₁)
六曜 (Japan)	先勝

Cast

Unix number	662684399.999732
Unix integer	662684399
HTML number	662684399999.732
HTML month number	251
Julian Day	2448257.45833333
Julian Day (integer of day)	2448257
Modified Julian Day	48256.9583333302
Rata Die	726832.95833333

Serializations

Global date and time string (time zone offset preserved)	1990-12-31T22:59:59.999731779Z
Global date and time string (UTC)	1990-12-31T22:59:59.999731779Z
Normalized forced-UTC global date and time string	1990-12-31T22:59:59.999731779Z
HTTP date	`Mon, 31 Dec 1990 22:59:59 GMT`
RSS2 date-time	`Mon, 31 Dec 1990 22:59:59 +0000`
`document.lastModified` format	`12/31/1990 22:59:59`
Local date and time string	1990-12-31T22:59:59.999731779
Normalized local date and time string	1990-12-31T22:59:59.999731779
Date string	1990-12-31
Date string with optional time	1990-12-31T22:59:59.999731779Z
Year string	1990
Month string	1990-12
Yearless date string	--12-31
Week string	1991-W01
Time string	22:59:59.999731779
Shortest time string	22:59:59.999731779

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

	Previous	Next
365 days	1989-12-31T22:59:59.999731779Z	1991-12-31T22:59:59.999731779Z
30 days	1990-12-01T22:59:59.999731779Z	1991-01-30T22:59:59.999731779Z
7 days	1990-12-24T22:59:59.999731779Z	1991-01-07T22:59:59.999731779Z
Day	1990-12-30T22:59:59.999731779Z	1991-01-01T22:59:59.999731779Z
Hour	1990-12-31T21:59:59.999731779Z	1990-12-31T23:59:59.999731779Z
Minute	1990-12-31T22:58:59.999731779Z	1990-12-31T23:00:59.999731779Z