date [ -r | -R | -u ] [+FORMAT] [FILE]
DATE
Usage: date [OPTION] [+FORMAT] [FILE]
Print the system date and time or last modification time of FILE.

	-r			Display the last modification time of FILE
	-R			Output date and time in RFC 2822 format. Ecample: Wed, 04 Dec 2013 22:48:37 +0100
	-u			Print Coordinated Universal Time

	FORMAT controls the output. Interpreted sequences are:
	G	Era designator		Text	AD
	y	Year			Year	1996; 96
	Y	Week year		Year	2009; 09
	M	Month in year		Month	July; Jul; 07
	w	Week in year		Number	27
	W	Week in month		Number	2
	D	Day in year		Number	189
	d	Day in month		Number	10
	F	Day of week in month	Number	2
	E	Day name in week	Text	Tuesday; Tue
	a	Am/pm marker		Text	PM
	H	Hour in day (0-23)	Number	0
	k	Hour in day (1-24)	Number	24
	K	Hour in am/pm (0-11)	Number	0
	h	Hour in am/pm (1-12)	Number	12
	m	Minute in hour		Number	30
	s	Second in minute	Number	55
	S	Millisecond		Number	978
	z	Time zone		General time zone	Pacific Standard Time; PST; GMT-08:00
	Z	Time zone		RFC 822 time zone	-0800
	X	Time zone		ISO 8601 time zone	-08; -0800; -08:00
	u	Day number of week (1 = Monday, ..., 7 = Sunday)	Number	1

FORMAT examples:
	"yyyy.MM.dd G 'at' HH:mm:ss z"		2001.07.04 AD at 12:08:56 PDT
	"EEE, MMM d, ''yy"			Wed, Jul 4, '01
	"h:mm a"				12:08 PM
	"hh 'o''clock' a, zzzz"			12 o'clock PM, Pacific Daylight Time
	"K:mm a, z"				0:08 PM, PDT
	"yyyyy.MMMMM.dd GGG hh:mm aaa"		02001.July.04 AD 12:08 PM
	"EEE, d MMM yyyy HH:mm:ss Z"		Wed, 4 Jul 2001 12:08:56 -0700
	"yyMMddHHmmssZ"				010704120856-0700
	"yyyy-MM-dd'T'HH:mm:ss.SSSZ"		2001-07-04T12:08:56.235-0700
	"yyyy-MM-dd'T'HH:mm:ss.SSSXXX"		2001-07-04T12:08:56.235-07:00
	"YYYY-'W'ww-u"				2001-W27-3

Examples:
	date			Print system date and time.
	date -u			Print system date and time in UTC format.
	date +"d.M.y"		Print system date in format 'day.month.year'.