Data.

-856-01-01T21:59:59.999404907Z

Date and time

Components

Year	-856
Month	1
Day	1
Hour	21
Minute	59
Second (integer part)	59
Second (fraction part)	0.999404907
Time zone offset	+00:00

Day (-0856-01-01)

Notes

Calendars

Proleptic Gregorian calendar	AD	-0856-01-01
	Japan	西曆-856年1月1日
	Ryuukyuu	西曆-856年1月1日
Proleptic Julian calendar	AD	-0856-01-09
	Japan	西曆-856年1月9日
	Ryuukyuu	西曆-856年1月9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	--01-01
Day of week (number)	6
Day of week (English)	Saturday
Day of week (日本語)	土曜日
Kanshi	乙酉 (21₀, 22₁)
六曜 (Japan)	Unknown

Cast

Unix number	-89179927200.0006
Unix integer	-89179927201
HTML number	-89179927200000.6
HTML month number	-33912
Julian Day	1408412.41666666
Julian Day (integer of day)	1408412
Modified Julian Day	-991588.08333334
Rata Die	-313012.08333334

Serializations

Global date and time string (time zone offset preserved)	-856-01-01T21:59:59.999404907Z
Global date and time string (UTC)	-856-01-01T21:59:59.999404907Z
Normalized forced-UTC global date and time string	-856-01-01T21:59:59.999404907Z
HTTP date	`Sat, 01 Jan -856 21:59:59 GMT`
RSS2 date-time	`Sat, 01 Jan -856 21:59:59 +0000`
`document.lastModified` format	`01/01/-856 21:59:59`
Local date and time string	-856-01-01T21:59:59.999404907
Normalized local date and time string	-856-01-01T21:59:59.999404907
Date string	-856-01-01
Date string with optional time	-856-01-01T21:59:59.999404907Z
Year string	-856
Month string	-856-01
Yearless date string	--01-01
Week string	-857-W52
Time string	21:59:59.999404907
Shortest time string	21:59:59.999404907

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	-857-01-01T21:59:59.999404907Z	-856-12-31T21:59:59.999404907Z
30 days	-857-12-02T21:59:59.999404907Z	-856-01-31T21:59:59.999404907Z
7 days	-857-12-25T21:59:59.999404907Z	-856-01-08T21:59:59.999404907Z
Day	-857-12-31T21:59:59.999404907Z	-856-01-02T21:59:59.999404907Z
Hour	-856-01-01T20:59:59.999404907Z	-856-01-01T22:59:59.999404907Z
Minute	-856-01-01T21:58:59.999404907Z	-856-01-01T22:00:59.999404907Z