@dfeidao/fd-an000054

获取一天的开始时间

Installation

yarn add --dev @dfeidao/fd-an000054

时间格式

单位	格式	示例
公元	G..GGG	AD, BC
	GGGG	Anno Domini, Before Christ
	GGGGG	A, B
年	y	44, 1, 1900, 2017
	yo	44th, 1st, 0th, 17th
	yy	44, 01, 00, 17
	yyy	044, 001, 1900, 2017
	yyyy	0044, 0001, 1900, 2017
	yyyyy	...
Local week-numbering year	Y	44, 1, 1900, 2017
	Yo	44th, 1st, 1900th, 2017th
	YY	44, 01, 00, 17
	YYY	044, 001, 1900, 2017
	YYYY	0044, 0001, 1900, 2017
	YYYYY	...
ISO week-numbering year	R	-43, 0, 1, 1900, 2017
	RR	-43, 00, 01, 1900, 2017
	RRR	-043, 000, 001, 1900, 2017
	RRRR	-0043, 0000, 0001, 1900, 2017
	RRRRR	...
Extended year	u	-43, 0, 1, 1900, 2017
	uu	-43, 01, 1900, 2017
	uuu	-043, 001, 1900, 2017
	uuuu	-0043, 0001, 1900, 2017
	uuuuu	...
刻	Q	1, 2, 3, 4
	Qo	1st, 2nd, 3rd, 4th
	QQ	01, 02, 03, 04
	QQQ	Q1, Q2, Q3, Q4
	QQQQ	1st quarter, 2nd quarter, ...
	QQQQQ	1, 2, 3, 4
Quarter (stand-alone)	q	1, 2, 3, 4
	qo	1st, 2nd, 3rd, 4th
	qq	01, 02, 03, 04
	qqq	Q1, Q2, Q3, Q4
	qqqq	1st quarter, 2nd quarter, ...
	qqqqq	1, 2, 3, 4
月	M	1, 2, ..., 12
	Mo	1st, 2nd, ..., 12th
	MM	01, 02, ..., 12
	MMM	Jan, Feb, ..., Dec
	MMMM	January, February, ..., December
	MMMMM	J, F, ..., D
Month (stand-alone)	L	1, 2, ..., 12
	Lo	1st, 2nd, ..., 12th
	LL	01, 02, ..., 12
	LLL	Jan, Feb, ..., Dec
	LLLL	January, February, ..., December
	LLLLL	J, F, ..., D
一年中的第几周	w	1, 2, ..., 53
	wo	1st, 2nd, ..., 53th
	ww	01, 02, ..., 53
ISO week of year	I	1, 2, ..., 53
	Io	1st, 2nd, ..., 53th
	II	01, 02, ..., 53
一月中的第几天	d	1, 2, ..., 31
	do	1st, 2nd, ..., 31st
	dd	01, 02, ..., 31
一年中的第几天	D	1, 2, ..., 365, 366
	Do	1st, 2nd, ..., 365th, 366th
	DD	01, 02, ..., 365, 366
	DDD	001, 002, ..., 365, 366
	DDDD	...
Day of week (formatting)	E..EEE	Mon, Tue, Wed, ..., Su
	EEEE	Monday, Tuesday, ..., Sunday
	EEEEE	M, T, W, T, F, S, S
	EEEEEE	Mo, Tu, We, Th, Fr, Su, Sa
ISO day of week (formatting)	i	1, 2, 3, ..., 7
	io	1st, 2nd, ..., 7th
	ii	01, 02, ..., 07
	iii	Mon, Tue, Wed, ..., Su
	iiii	Monday, Tuesday, ..., Sunday
	iiiii	M, T, W, T, F, S, S
	iiiiii	Mo, Tu, We, Th, Fr, Su, Sa
一周中的第几天	e	2, 3, 4, ..., 1
	eo	2nd, 3rd, ..., 1st
	ee	02, 03, ..., 01
	eee	Mon, Tue, Wed, ..., Su
	eeee	Monday, Tuesday, ..., Sunday
	eeeee	M, T, W, T, F, S, S
	eeeeee	Mo, Tu, We, Th, Fr, Su, Sa
Local day of week (stand-alone)	c	2, 3, 4, ..., 1
	co	2nd, 3rd, ..., 1st
	cc	02, 03, ..., 01
	ccc	Mon, Tue, Wed, ..., Su
	cccc	Monday, Tuesday, ..., Sunday
	ccccc	M, T, W, T, F, S, S
	cccccc	Mo, Tu, We, Th, Fr, Su, Sa
上午, 下午	a..aaa	AM, PM
	aaaa	a.m., p.m.
	aaaaa	a, p
上午, 下午, 中午, 子夜	b..bbb	AM, PM, noon, midnight
	bbbb	a.m., p.m., noon, midnight
	bbbbb	a, p, n, mi
Flexible day period	B..BBB	at night, in the morning, ...
	BBBB	at night, in the morning, ...
	BBBBB	at night, in the morning, ...
小时 [1-12]	h	1, 2, ..., 11, 12
	ho	1st, 2nd, ..., 11th, 12th
	hh	01, 02, ..., 11, 12
小时 [0-23]	H	0, 1, 2, ..., 23
	Ho	0th, 1st, 2nd, ..., 23rd
	HH	00, 01, 02, ..., 23
小时 [0-11]	K	1, 2, ..., 11, 0
	Ko	1st, 2nd, ..., 11th, 0th
	KK	1, 2, ..., 11, 0
小时 [1-24]	k	24, 1, 2, ..., 23
	ko	24th, 1st, 2nd, ..., 23rd
	kk	24, 01, 02, ..., 23
分钟	m	0, 1, ..., 59
	mo	0th, 1st, ..., 59th
	mm	00, 01, ..., 59
秒	s	0, 1, ..., 59
	so	0th, 1st, ..., 59th
	ss	00, 01, ..., 59
Fraction of second	S	0, 1, ..., 9
	SS	00, 01, ..., 99
	SSS	000, 0001, ..., 999
	SSSS	...
时区 (ISO-8601 w/ Z)	X	-08, +0530, Z
	XX	-0800, +0530, Z
	XXX	-08:00, +05:30, Z
	XXXX	-0800, +0530, Z, +123456
	XXXXX	-08:00, +05:30, Z, +12:34:56
时区 (ISO-8601 w/o Z)	x	-08, +0530, +00
	xx	-0800, +0530, +0000
	xxx	-08:00, +05:30, +00:00
	xxxx	-0800, +0530, +0000, +123456
	xxxxx	-08:00, +05:30, +00:00, +12:34:56
时区 (GMT)	O...OOO	GMT-8, GMT+5:30, GMT+0
	OOOO	GMT-08:00, GMT+05:30, GMT+00:00
时区 (specific non-locat.)	z...zzz	GMT-8, GMT+5:30, GMT+0
	zzzz	GMT-08:00, GMT+05:30, GMT+00:00
以秒为单位的时间戳	t	512969520
	tt	...
以毫秒为单位的时间戳	T	512969520900
	TT	...
Long localized date	P	5/29/53
	PP	May 29, 1453
	PPP	May 29th, 1453
	PPPP	Sunday, May 29th, 1453
Long localized time	p	12:00 AM
	pp	12:00:00 AM
	ppp	12:00:00 AM GMT+2
	pppp	12:00:00 AM GMT+02:00
Combination of date and time	Pp	5/29/53, 12:00 AM
	PPpp	May 29, 1453, 12:00 AM
	PPPppp	May 29th, 1453 at ...
	PPPPpppp	Sunday, May 29th, 1453 at ...

Example

import an54 from '@dfeidao/fd-an000054';
const now_date = new Date().getTime(); // 1551168254155
const new_date = an54(now_date);  // 1551110400000