Data.

1971-09-20T23:58:59.000009Z

Date and time

Components

Year	1971
Month	9
Day	20
Hour	23
Minute	58
Second (integer part)	59
Second (fraction part)	0.000009
Time zone offset	+00:00

Day (1971-09-20)

Notes

Calendars

Proleptic Gregorian calendar	AD	1971-09-20
	Japan	昭和46年9月20日
	Ryuukyuu	西曆1971年9月20日
Proleptic Julian calendar	AD	1971-09-07
	Japan	昭和46年9月7日
	Ryuukyuu	西曆1971年9月7日
旧暦Kyuureki (Japan)	AD	1971年8月2日
	Japan (北朝)	昭和46年8月2日
	Japan (南朝)	昭和46年8月2日
旧暦Kyuureki (Ryuukyuu)	AD	1971年8月2日
旧暦Kyuureki (Ryuukyuu)	Ryuukyuu	西曆1971年8月2日

Holidays

Japan	Normal day
Ryukyu	Normal day

Properties

Yearless date	--09-20
Day of week (number)	1
Day of week (English)	Monday
Day of week (日本語)	月曜日
Kanshi	戊申 (44₀, 45₁)
六曜 (Japan)	先負

Cast

Unix number	54259139.000009
Unix integer	54259139
HTML number	54259139000.009
HTML month number	20
Julian Day	2441215.49929398
Julian Day (integer of day)	2441215
Modified Julian Day	41214.9992939816
Rata Die	719790.999293982

Serializations

Global date and time string (time zone offset preserved)	1971-09-20T23:58:59.000009Z
Global date and time string (UTC)	1971-09-20T23:58:59.000009Z
Normalized forced-UTC global date and time string	1971-09-20T23:58:59.000009Z
HTTP date	`Mon, 20 Sep 1971 23:58:59 GMT`
RSS2 date-time	`Mon, 20 Sep 1971 23:58:59 +0000`
`document.lastModified` format	`09/20/1971 23:58:59`
Local date and time string	1971-09-20T23:58:59.000009
Normalized local date and time string	1971-09-20T23:58:59.000009
Date string	1971-09-20
Date string with optional time	1971-09-20T23:58:59.000009Z
Year string	1971
Month string	1971-09
Yearless date string	--09-20
Week string	1971-W38
Time string	23:58:59.000009
Shortest time string	23:58:59.000009

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	1970-09-20T23:58:59.000009Z	1972-09-19T23:58:59.000009Z
30 days	1971-08-21T23:58:59.000009Z	1971-10-20T23:58:59.000009Z
7 days	1971-09-13T23:58:59.000009Z	1971-09-27T23:58:59.000009Z
Day	1971-09-19T23:58:59.000009Z	1971-09-21T23:58:59.000009Z
Hour	1971-09-20T22:58:59.000009Z	1971-09-21T00:58:59.000009Z
Minute	1971-09-20T23:57:59.000009Z	1971-09-20T23:59:59.000009Z