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21.1.1 Time conversion specifiers

date conversion specifiers related to times.

%H

hour (‘00’…‘23’)

%I

hour (‘01’…‘12’)

%k

hour (‘ 0’…‘23’). This is a GNU extension.

%l

hour (‘ 1’…‘12’). This is a GNU extension.

%M

minute (‘00’…‘59’)

%N

nanoseconds (‘000000000’…‘999999999’). This is a GNU extension.

%p

locale's equivalent of either ‘AM’ or ‘PM’; blank in many locales. Noon is treated as ‘PM’ and midnight as ‘AM’.

%P

like ‘%p’, except lower case. This is a GNU extension.

%r

locale's 12-hour clock time (e.g., ‘11:11:04 PM’)

%R

24-hour hour and minute. Same as ‘%H:%M’. This is a GNU extension.

%s

seconds since the epoch, i.e., since 1970-01-01 00:00:00 UTC. Leap seconds are not counted unless leap second support is available. See %s-examples, for examples. This is a GNU extension.

%S

second (‘00’…‘60’). This may be ‘60’ if leap seconds are supported.

%T

24-hour hour, minute, and second. Same as ‘%H:%M:%S’.

%X

locale's time representation (e.g., ‘23:13:48’)

%z

RFC 2822/ISO 8601 style numeric time zone (e.g., ‘-0600’ or ‘+0530’), or nothing if no time zone is determinable. This value reflects the numeric time zone appropriate for the current time, using the time zone rules specified by the TZ environment variable. The time (and optionally, the time zone rules) can be overridden by the ‘--date’ option. This is a GNU extension.

%:z

RFC 3339/ISO 8601 style numeric time zone with ‘:’ (e.g., ‘-06:00’ or ‘+05:30’), or nothing if no time zone is determinable. This is a GNU extension.

%::z

Numeric time zone to the nearest second with ‘:’ (e.g., ‘-06:00:00’ or ‘+05:30:00’), or nothing if no time zone is determinable. This is a GNU extension.

%:::z

Numeric time zone with ‘:’ using the minimum necessary precision (e.g., ‘-06’, ‘+05:30’, or ‘-04:56:02’), or nothing if no time zone is determinable. This is a GNU extension.

%Z

alphabetic time zone abbreviation (e.g., ‘EDT’), or nothing if no time zone is determinable. See ‘%z’ for how it is determined.


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