Data.

-856-12-31T22:59:59.999694824Z

Date and time

Components

Year	-856
Month	12
Day	31
Hour	22
Minute	59
Second (integer part)	59
Second (fraction part)	0.999694824
Time zone offset	+00:00

Day (-0856-12-31)

Notes

Calendars

Proleptic Gregorian calendar	AD	-0856-12-31
	Japan	西曆-856年12月31日
	Ryuukyuu	西曆-856年12月31日
Proleptic Julian calendar	AD	-0855-01-08
	Japan	西曆-855年1月8日
	Ryuukyuu	西曆-855年1月8日
旧暦Kyuureki (Japan)	AD	Unknown
	Japan (北朝)	Unknown
	Japan (南朝)	Unknown
旧暦Kyuureki (Ryuukyuu)	AD	Unknown
旧暦Kyuureki (Ryuukyuu)	Ryuukyuu	Unknown

Holidays

Japan	Normal day

Properties

Yearless date	--12-31
Day of week (number)	0
Day of week (English)	Sunday
Day of week (日本語)	日曜日
Kanshi	庚寅 (26₀, 27₁)
六曜 (Japan)	Unknown

Cast

Unix number	-89148387600.0003
Unix integer	-89148387601
HTML number	-89148387600000.3
HTML month number	-33901
Julian Day	1408777.45833333
Julian Day (integer of day)	1408777
Modified Julian Day	-991223.04166667
Rata Die	-312647.04166667

Serializations

Global date and time string (time zone offset preserved)	-856-12-31T22:59:59.999694824Z
Global date and time string (UTC)	-856-12-31T22:59:59.999694824Z
Normalized forced-UTC global date and time string	-856-12-31T22:59:59.999694824Z
HTTP date	`Sun, 31 Dec -856 22:59:59 GMT`
RSS2 date-time	`Sun, 31 Dec -856 22:59:59 +0000`
`document.lastModified` format	`12/31/-856 22:59:59`
Local date and time string	-856-12-31T22:59:59.999694824
Normalized local date and time string	-856-12-31T22:59:59.999694824
Date string	-856-12-31
Date string with optional time	-856-12-31T22:59:59.999694824Z
Year string	-856
Month string	-856-12
Yearless date string	--12-31
Week string	-856-W52
Time string	22:59:59.999694824
Shortest time string	22:59:59.999694824

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	-856-01-01T22:59:59.999694824Z	-855-12-31T22:59:59.999694824Z
30 days	-856-12-01T22:59:59.999694824Z	-855-01-30T22:59:59.999694824Z
7 days	-856-12-24T22:59:59.999694824Z	-855-01-07T22:59:59.999694824Z
Day	-856-12-30T22:59:59.999694824Z	-855-01-01T22:59:59.999694824Z
Hour	-856-12-31T21:59:59.999694824Z	-856-12-31T23:59:59.999694824Z
Minute	-856-12-31T22:58:59.999694824Z	-856-12-31T23:00:59.999694824Z