Formatos Fecha y hora

Throughout your 4D projects, you might need to format date and/or time values according to the specificities of the application, the platform, or the interface.

4D includes a comprehensive list of patterns that you can use to create and apply customized date and time formats in your applications, in addition to default formats. Customized format patterns are supported by the following features:

• the String command,
• the OBJECT SET FORMAT and OBJECT Get format commands,
• the date and time format form object properties, available from the Property list or the dateFormat and timeFormat JSON properties.

Lista de patrones

The following table lists all supported patterns for date and time formats.

Símbolo	Significado	Modelo	Ejemplo de salida
G	designador de era	G, GG o GGG	AD
		GGGG	Anno Domini
		GGGGG	A
y	año	yy	96
		y o yyyy	1996
Y	año de "Semana del año"	Y	1997
u	año prolongado	u	4601
Q	trimestre	Q	2
		QQ	02
		QQQ	Q2
		QQQQ	2do trimestre
		QQQQQ	2
q	trimestre independiente	q	2
		qq	02
		qqq	Q2
		qqqq	2do trimestre
		qqqqq	2
M	mes en año	M	9
		MM	09
		MMM	Sept
		MMMM	Septiembre
		MMMMM	S
L	mes independiente en año	L	9
		LL	09
		LLL	Sept
		LLLL	Septiembre
		LLLLL	S
w	semana del año	w	27
		ww	27
d	día del mes	d	2
		dd	2
D	día del año	D	189
E	día de la semana	E, EE o EEE	Tue
		EEEE	Tuesday
		EEEEE	T
		EEEEEE	Tu
e	local day of week	e	2
		ee	02
		eee	Tue
		eeee	Tuesday
		eeeee	T
		eeeeee	Tu
c	stand-alone local day of week	c o cc	2
		ccc	Tue
		cccc	Tuesday
		ccccc	T
		cccccc	Tu
a	AM o PM	a, aa, o aaa	PM [abbrev]
		aaaa	PM [wide]
		aaaaa	p
b	AM, PM, mediodía, medianoche	b, bb o bbb	mid.
		bbbb	medianoche
		bbbbb	md
B	flexible day periods	B, BB o BBB	at night [abbrev]
		BBBB	at night [wide]
		BBBBB	at night [narrow]
h	hour in am/pm (1~12)	h	7
		hh	07
H	hour in day (0~23)	H	0
		HH	00
K	hour in am/pm (0~11)	K	0
		KK	00
k	hour in day (1~24)	k	24
		kk	24
m	minuto en hora	m	4
		mm	04
s	segundo en minuto	s	5
		ss	05
X	Time Zone: ISO8601 basic hm?, with Z for 0	X	-08, +0530, Z
	Zona horaria: ISO8601 hm básico, con Z	XX	-0800, Z
	Time Zone: ISO8601 extended hm, with Z	XXX	-08:00, Z
	Time Zone: ISO8601 basic hms?, with Z	XXXX	-0800, -075258, Z
	Time Zone: ISO8601 extended hms?, with Z	XXXXX	-08:00, -07:52:58, Z
x	Time Zone: ISO8601 basic hm?, without Z for 0	x	-08, +0530
	Time Zone: ISO8601 basic hm, without Z	xx	-0800, +0000
	Time Zone: ISO8601 extended hm, without Z	xxx	-08:00
	Time Zone: ISO8601 basic hms?, without Z	xxxx	-0800, -075258
	Time Zone: ISO8601 extended hms?, without Z	xxxxx	-08:00, -07:52:58
O	Time Zone: short localized GMT	O	GMT-8
	Time Zone: long localized GMT (=ZZZZ)	OOOO	GMT-08:00
z	Time Zone: specific non-location	z, zz, o zzz	-0800
		zzzz	GMT-08:00
		zzzzz	-08:00, -07:52:58, Z
'	escape for text	'	'
' '	two single quotes produce one	' '	' '

Explorar modelos

y vs Y

y is the calendar year, while Y is the year based on the week number. For example, if the first days of January 2010 are not week #1, then y = 2010 but Y = 2009 (until the date where the 1st week of 2010 begins).

L (monopuesto) vs M

In some languages (Russian, Slovak), the month used alone is different from the month in a date. In "January 10, 2010", "January" is not spelled the same as in "rendez-vous in January".

e vs c

Same remark as for L and M: c is for a day used alone "every tuesday") and e is for a day in a date ("Tuesday January 15, 1951").

E vs e

e is based on system settings: if the week is defined in the system as starting on a Wednesday, then Wednesday will have the numerical value "1" (or zero) whereas "E" always returns the same value (from 1 to 7 or from 0 to 6).

Ceros a la izquierda

In general, when the number of letters in the formatting string is higher than the expected number, leading zeros are added. Ej: "yyyyy" daría "001996".

Partes localizadas

Some parts of the outputs, such as "midnight" or "Tuesday" are localized, according to regional settings.

For example, for the time 13:25:34, "B" will display in the afternoon on an US system, and après-midi on a French system.

Letras adicionales

Formatting strings can contain characters not to be interpreted as formatting characters: if they are between "a" and "z" or "A" and "Z", they must be enclosed in single quotes.

Por ejemplo:

"15:30:00" with pattern "HH 'hours and' mm 'minutes'" produces "15 hours and 30 minutes".

Espacios iniciales y finales

Starting and ending spaces in patterns are automatically trimmed in outputs. If you want to add spaces before or after the resulting string, you must enclose them in single quotes.

Por ejemplo:

" HH : mm : ss " ---> "09 : 10 : 25" "' 'HH : mm : ss' '" ---> " 09 : 10 : 25 "

Ejemplos

Fecha u hora	Modelo	Result	Comentarios
15/06/2000	"QQQQ"	"2do trimestre"	localizado
17/03/2001	"D"	"76"	76º día del año
17/03/1954	"w"	"11"	11ª semana del año
17/03/1954	"eeee"	"Miércoles"	localizado
15:00:00	"a"	"PM"
18:00:00	"K a"	"6 PM"
13:30:15	"hh:mm aa O"	"01:30 PM GMT+1"

Ver también

See this blogpost for more information on the custom date and time formats.