Date/time Formatting

Date/time formats use Numbers notation rather than POSIX strftime as there are a number of extensions. Date components are specified using directives which must be separated by whitespace. Supported directives are:

Directive	Meaning	Example
a	Locale’s AM or PM	am, pm
EEEE	Full weekday name	Monday, Tuesday, …
EEE	Abbreviated weekday name	Mon, Tue, …
yyyy	Year with century as a decimal number	1999, 2023, etc.
yy	Year without century as a zero-padded decimal number	00, 01, … 99
y	Year without century as a decimal number	0, 1, … 99
MMMM	Full month name	January, February, …
MMM	Abbreviated month name	Jan, Feb, …
MM	Month as a zero-padded decimal number	01, 02, … 12
M	Month as a decimal number	1, 2, … 12
d	Day as a decimal number	1, 2, … 31
dd	Day as a zero-padded decimal number	01, 02, … 31
DDD	Day of the year as a zero-padded 3-digit number	001 - 366
DD	Day of the year as a minimum zero-padded 2-digit number	01 - 366
D	Day of the year	1 - 366
HH	Hour (24-hour clock) as a zero-padded decimal number	00, 01, … 23
H	Hour (24-hour clock) as a decimal number	0, 1, … 23
hh	Hour (12-hour clock) as a zero-padded decimal number	01, 02, … 12
h	Hour (12-hour clock) as a decimal number	1, 2, … 12
k	Hour (24-hour clock) as a decimal number to 24	1, 2, … 24
kk	Hour (24-hour clock) as a zero-padded decimal number to 24	01, 02, … 24
K	Hour (12-hour clock) as a decimal number from 0	0, 1, … 11
KK	Hour (12-hour clock) as a zero-padded decimal number from 0	00, 01, … 11
mm	Minutes as a zero-padded number	00, 01, … 59
m	Minutes as a number	0, 1, … 59
ss	Seconds as a zero-padded number	00, 01, … 59
s	Seconds as a number	0, 1, … 59
W	Week number in the month (first week is zero)	0, 1, … 5
ww	Week number of the year (Monday as the first day of the week)	0, 1, … 53
G	AD or BC (only AD is supported)	AD
F	How many times the day of falls in the month	1, 2, … 5
S	Seconds to one decimal place	0 - 9
SS	Seconds to two decimal places	00 - 99
SSS	Seconds to three decimal places	000 - 999
SSSS	Seconds to four decimal places	0000 - 9999
SSSSS	Seconds to five decimal places	00000 - 9999