Data.

0820-12-31T22:59:59.999710083Z

Date and time

Components

Year	820
Month	12
Day	31
Hour	22
Minute	59
Second (integer part)	59
Second (fraction part)	0.999710083
Time zone offset	+00:00

Day (0820-12-31)

Notes

Calendars

Proleptic Gregorian calendar	AD	0820-12-31
	Japan	弘仁11年12月31日
	Ryuukyuu	弘仁11年12月31日
Proleptic Julian calendar	AD	0820-12-27
	Japan	弘仁11年12月27日
	Ryuukyuu	弘仁11年12月27日
旧暦Kyuureki (Japan)	AD	820年11月19日
	Japan (北朝)	弘仁11年11月19日
	Japan (南朝)	弘仁11年11月19日
旧暦Kyuureki (Ryuukyuu)	AD	820年11月19日
旧暦Kyuureki (Ryuukyuu)	Ryuukyuu	弘仁11年11月19日

Holidays

Japan	Normal day

Properties

Yearless date	--12-31
Day of week (number)	4
Day of week (English)	Thursday
Day of week (日本語)	木曜日
Kanshi	丁巳 (53₀, 54₁)
六曜 (Japan)	大安

Cast

Unix number	-36258886800.0003
Unix integer	-36258886801
HTML number	-36258886800000.3
HTML month number	-13789
Julian Day	2020924.45833333
Julian Day (integer of day)	2020924
Modified Julian Day	-379076.04166667
Rata Die	299499.95833333

Serializations

Global date and time string (time zone offset preserved)	0820-12-31T22:59:59.999710083Z
Global date and time string (UTC)	0820-12-31T22:59:59.999710083Z
Normalized forced-UTC global date and time string	0820-12-31T22:59:59.999710083Z
HTTP date	`Thu, 31 Dec 0820 22:59:59 GMT`
RSS2 date-time	`Thu, 31 Dec 0820 22:59:59 +0000`
`document.lastModified` format	`12/31/0820 22:59:59`
Local date and time string	0820-12-31T22:59:59.999710083
Normalized local date and time string	0820-12-31T22:59:59.999710083
Date string	0820-12-31
Date string with optional time	0820-12-31T22:59:59.999710083Z
Year string	0820
Month string	0820-12
Yearless date string	--12-31
Week string	0820-W53
Time string	22:59:59.999710083
Shortest time string	22:59:59.999710083

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	0820-01-01T22:59:59.999710083Z	0821-12-31T22:59:59.999710083Z
30 days	0820-12-01T22:59:59.999710083Z	0821-01-30T22:59:59.999710083Z
7 days	0820-12-24T22:59:59.999710083Z	0821-01-07T22:59:59.999710083Z
Day	0820-12-30T22:59:59.999710083Z	0821-01-01T22:59:59.999710083Z
Hour	0820-12-31T21:59:59.999710083Z	0820-12-31T23:59:59.999710083Z
Minute	0820-12-31T22:58:59.999710083Z	0820-12-31T23:00:59.999710083Z