Data.

1921-09-18T22:59:59.999731779Z

Date and time

Components

Year	1921
Month	9
Day	18
Hour	22
Minute	59
Second (integer part)	59
Second (fraction part)	0.999731779
Time zone offset	+00:00

Day (1921-09-18)

Notes

Calendars

Proleptic Gregorian calendar	AD	1921-09-18
	Japan	大正10年9月18日
	Ryuukyuu	大正10年9月18日
Proleptic Julian calendar	AD	1921-09-05
	Japan	大正10年9月5日
	Ryuukyuu	大正10年9月5日
旧暦Kyuureki (Japan)	AD	1921年8月17日
	Japan (北朝)	大正10年8月17日
	Japan (南朝)	大正10年8月17日
旧暦Kyuureki (Ryuukyuu)	AD	1921年8月17日
旧暦Kyuureki (Ryuukyuu)	Ryuukyuu	大正10年8月17日

Holidays

Japan	Sunday

Properties

Yearless date	--09-18
Day of week (number)	0
Day of week (English)	Sunday
Day of week (日本語)	日曜日
Kanshi	甲申 (20₀, 21₁)
六曜 (Japan)	赤口

Cast

Unix number	-1523754000.00027
Unix integer	-1523754001
HTML number	-1523754000000.27
HTML month number	-580
Julian Day	2422951.45833333
Julian Day (integer of day)	2422951
Modified Julian Day	22950.9583333302
Rata Die	701526.95833333

Serializations

Global date and time string (time zone offset preserved)	1921-09-18T22:59:59.999731779Z
Global date and time string (UTC)	1921-09-18T22:59:59.999731779Z
Normalized forced-UTC global date and time string	1921-09-18T22:59:59.999731779Z
HTTP date	`Sun, 18 Sep 1921 22:59:59 GMT`
RSS2 date-time	`Sun, 18 Sep 1921 22:59:59 +0000`
`document.lastModified` format	`09/18/1921 22:59:59`
Local date and time string	1921-09-18T22:59:59.999731779
Normalized local date and time string	1921-09-18T22:59:59.999731779
Date string	1921-09-18
Date string with optional time	1921-09-18T22:59:59.999731779Z
Year string	1921
Month string	1921-09
Yearless date string	--09-18
Week string	1921-W37
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

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365 days	1920-09-18T22:59:59.999731779Z	1922-09-18T22:59:59.999731779Z
30 days	1921-08-19T22:59:59.999731779Z	1921-10-18T22:59:59.999731779Z
7 days	1921-09-11T22:59:59.999731779Z	1921-09-25T22:59:59.999731779Z
Day	1921-09-17T22:59:59.999731779Z	1921-09-19T22:59:59.999731779Z
Hour	1921-09-18T21:59:59.999731779Z	1921-09-18T23:59:59.999731779Z
Minute	1921-09-18T22:58:59.999731779Z	1921-09-18T23:00:59.999731779Z