Data.

1988-01-31T22:59:59.999731779Z

Date and time

Components

Year	1988
Month	1
Day	31
Hour	22
Minute	59
Second (integer part)	59
Second (fraction part)	0.999731779
Time zone offset	+00:00

Day (1988-01-31)

Notes

Calendars

Proleptic Gregorian calendar	AD	1988-01-31
	Japan	昭和63年1月31日
	Ryuukyuu	昭和63年1月31日
Proleptic Julian calendar	AD	1988-01-18
	Japan	昭和63年1月18日
	Ryuukyuu	昭和63年1月18日
旧暦Kyuureki (Japan)	AD	1987年12月13日
	Japan (北朝)	昭和62年12月13日
	Japan (南朝)	昭和62年12月13日
旧暦Kyuureki (Ryuukyuu)	AD	1987年12月13日
旧暦Kyuureki (Ryuukyuu)	Ryuukyuu	昭和62年12月13日

Holidays

Japan	Sunday

Properties

Yearless date	--01-31
Day of week (number)	0
Day of week (English)	Sunday
Day of week (日本語)	日曜日
Kanshi	乙酉 (21₀, 22₁)
六曜 (Japan)	赤口

Cast

Unix number	570668399.999732
Unix integer	570668399
HTML number	570668399999.732
HTML month number	216
Julian Day	2447192.45833333
Julian Day (integer of day)	2447192
Modified Julian Day	47191.9583333302
Rata Die	725767.95833333

Serializations

Global date and time string (time zone offset preserved)	1988-01-31T22:59:59.999731779Z
Global date and time string (UTC)	1988-01-31T22:59:59.999731779Z
Normalized forced-UTC global date and time string	1988-01-31T22:59:59.999731779Z
HTTP date	`Sun, 31 Jan 1988 22:59:59 GMT`
RSS2 date-time	`Sun, 31 Jan 1988 22:59:59 +0000`
`document.lastModified` format	`01/31/1988 22:59:59`
Local date and time string	1988-01-31T22:59:59.999731779
Normalized local date and time string	1988-01-31T22:59:59.999731779
Date string	1988-01-31
Date string with optional time	1988-01-31T22:59:59.999731779Z
Year string	1988
Month string	1988-01
Yearless date string	--01-31
Week string	1988-W04
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

	Previous	Next
365 days	1987-01-31T22:59:59.999731779Z	1989-01-30T22:59:59.999731779Z
30 days	1988-01-01T22:59:59.999731779Z	1988-03-01T22:59:59.999731779Z
7 days	1988-01-24T22:59:59.999731779Z	1988-02-07T22:59:59.999731779Z
Day	1988-01-30T22:59:59.999731779Z	1988-02-01T22:59:59.999731779Z
Hour	1988-01-31T21:59:59.999731779Z	1988-01-31T23:59:59.999731779Z
Minute	1988-01-31T22:58:59.999731779Z	1988-01-31T23:00:59.999731779Z