Date format meaning

1 Example

format	Examples
dd/MM/yyyy	06/03/2007
dd-MMM-yyyy	06-Mar-2007
MM/dd/yyyy	03/06/2007
MMM dd, yyyy	Mar 06, 2007
MMMMM dd, yyyy	March 06, 2007
yyyy.MM.dd	2007.06.03
yyyy/MM/dd	2007/06/03
yyyy-MM-dd	2007-06-03

format	Examples
dd-MM-yyyy HH’h’mm	06-03-2007 13h44
dd-MM-yyyy HH’h’MM’min’	06-03-2007 13h44min
dd-MMM-yyyy HH:mm	06-Mar-2007 13:44
dd/MM/yyyy HH’h’mm	06/03/2007 13h44
dd/MM/yyyy HH:mm	06/03/2007 13:44
dd/MM/yyyy hh:mm a zzz	06/03/2007 01:44 PM PST
dd/MM/yyyy HH:mm zzz	06/03/2007 13:44 PST
dd/MM/yyyy HH:mm:ss	06/03/2007 13:44:25
dd/MM/yyyy hh:mm:ss a zzz	06/03/2007 01:44:25 PM PST
dd.MM.yyyy HH:mm:ss	06.03.2007 13:44:25
MM/dd/yyyy HH:mm	03/06/2007 13:44
MM/dd/yyyy hh:mm a zzz	03/06/2007 01:44 PM PST
MM/dd/yyyy HH:mm zzz	03/06/2007 13:44 PST
MM/dd/yyyy HH:mm:ss	03/06/2007 13:44:25
MM/dd/yyyy hh:mm:ss a zzz	03/06/2007 01:44:25 PM PST
MMMMM dd, yyyy hh:mm a zzz	March 06, 2007 01:44 PM PST
yyyy-MM-dd HH.mm	2007-03-06 13.44
yyyy-MM-dd hh:mm a zzz	2007-03-06 01:44 PM PST
yyyy.MM.dd hh:mm a zzz	2007.03.06 01:44 PM PST
yyyy/MM/dd hh:mm a zzz	2007/03/06 01:44 PM PST
yyyy/MM/dd HH:mm zzz	2007/03/06 13:44 PST

2 letter meaning

Alphabet sequence	description	Examples
d	One or two-digit date in a month	1 - 31
dd	Two-digit date in a month	01 - 31
DDD	Three-digit day of the year	001 - 366
EEE	Abbreviated day of the week	Mon - Sun
EEEE	The full name of the day of the week	Monday - Sunday
M	One-digit or two-digit month	1 - 12
MM	Two-digit month	01 - 12
MMM	Three-letter month abbreviation	Jan - Dec
MMMMM	Full name of month	January - December
and	One or two digit year	0 - 99
yy	Two-digit year	00 - 99
yyyy	Four-digit year	1999、2000、2010

Alphabet sequence	description	Examples
a	Means AM or PM	AM or PM
h	One or two-digit hours in the morning / afternoon (1-12)	1 - 12
hh	Two-digit hours in the morning / afternoon (01-12)	01 - 12
H	One or two digit hour in a day (0-23)	0 - 23
HH	Two-digit hours in a day (00-23)	00 - 23
m	One or two-digit minutes in an hour	0 - 59
mm	Two-digit minutes in an hour	00 - 59
s	One or two-digit seconds in a minute	0 - 59
S	One, two or three digit milliseconds	0 - 999
ss	Two-digit seconds in a minute	00 - 59
SSS	Three-digit milliseconds	000 - 999
z or zzz	Three-letter time zone abbreviation	EST, CST, etc.
WITH	Time zone relative to GMT	-0500, -0600, etc.

3 oracle date format

Format	Description
AND	The last digit of the year, such as: 5
YY	The last two digits of the year, such as: 15
YYY	The last three digits of the year, such as: 015
YYYY	Year, such as: 2015
Y, YYY	Years are separated by commas
SYYYY	year
YEAR	年拼写，如：TWENTY FIFTEEN
SYEAR	年拼写，如：TWENTY FIFTEEN
I	ISO年的最后一位数字，如：5
IY	ISO年的最后两位数字，如：15
IYY	ISO年的最后三位数字，如：015
IYYY	ISO年，如：2015
RR	两位数字年，如：15
RRRR	四位数字年，如：2015
—	—
MM	Month (01-12)
MON	月份简称，如：JUN
MONTH	月份全称，如：JUNE
RM	罗马数字月份
—	—
D	Day of week (1-7)
DD	Day of month (1-31)
DDD	Day of year (1-366)
—	—
HH	Hour of day (1-12)
HH12	Hour of day (1-12)
HH24	Hour of day (0-23)
MI	Minute (0-59)
SS	Second (0-59)
SSSSS	Seconds past midnight
FF [1…9]	毫秒