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November 12, 2015 11:52
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Ruby: Date and time formating
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Date (Year, Month, Day): | |
%Y - Year with century (can be negative, 4 digits at least) | |
-0001, 0000, 1995, 2009, 14292, etc. | |
%C - year / 100 (round down. 20 in 2009) | |
%y - year % 100 (00..99) | |
%m - Month of the year, zero-padded (01..12) | |
%_m blank-padded ( 1..12) | |
%-m no-padded (1..12) | |
%B - The full month name (``January'') | |
%^B uppercased (``JANUARY'') | |
%b - The abbreviated month name (``Jan'') | |
%^b uppercased (``JAN'') | |
%h - Equivalent to %b | |
%d - Day of the month, zero-padded (01..31) | |
%-d no-padded (1..31) | |
%e - Day of the month, blank-padded ( 1..31) | |
%j - Day of the year (001..366) | |
Time (Hour, Minute, Second, Subsecond): | |
%H - Hour of the day, 24-hour clock, zero-padded (00..23) | |
%k - Hour of the day, 24-hour clock, blank-padded ( 0..23) | |
%I - Hour of the day, 12-hour clock, zero-padded (01..12) | |
%l - Hour of the day, 12-hour clock, blank-padded ( 1..12) | |
%P - Meridian indicator, lowercase (``am'' or ``pm'') | |
%p - Meridian indicator, uppercase (``AM'' or ``PM'') | |
%M - Minute of the hour (00..59) | |
%S - Second of the minute (00..60) | |
%L - Millisecond of the second (000..999) | |
%N - Fractional seconds digits, default is 9 digits (nanosecond) | |
%3N millisecond (3 digits) | |
%6N microsecond (6 digits) | |
%9N nanosecond (9 digits) | |
%12N picosecond (12 digits) | |
Time zone: | |
%z - Time zone as hour and minute offset from UTC (e.g. +0900) | |
%:z - hour and minute offset from UTC with a colon (e.g. +09:00) | |
%::z - hour, minute and second offset from UTC (e.g. +09:00:00) | |
%Z - Time zone abbreviation name | |
Weekday: | |
%A - The full weekday name (``Sunday'') | |
%^A uppercased (``SUNDAY'') | |
%a - The abbreviated name (``Sun'') | |
%^a uppercased (``SUN'') | |
%u - Day of the week (Monday is 1, 1..7) | |
%w - Day of the week (Sunday is 0, 0..6) | |
ISO 8601 week-based year and week number: | |
The week 1 of YYYY starts with a Monday and includes YYYY-01-04. | |
The days in the year before the first week are in the last week of | |
the previous year. | |
%G - The week-based year | |
%g - The last 2 digits of the week-based year (00..99) | |
%V - Week number of the week-based year (01..53) | |
Week number: | |
The week 1 of YYYY starts with a Sunday or Monday (according to %U | |
or %W). The days in the year before the first week are in week 0. | |
%U - Week number of the year. The week starts with Sunday. (00..53) | |
%W - Week number of the year. The week starts with Monday. (00..53) | |
Seconds since the Epoch: | |
%s - Number of seconds since 1970-01-01 00:00:00 UTC. | |
Literal string: | |
%n - Newline character (\n) | |
%t - Tab character (\t) | |
%% - Literal ``%'' character | |
Combination: | |
%c - date and time (%a %b %e %T %Y) | |
%D - Date (%m/%d/%y) | |
%F - The ISO 8601 date format (%Y-%m-%d) | |
%v - VMS date (%e-%^b-%4Y) | |
%x - Same as %D | |
%X - Same as %T | |
%r - 12-hour time (%I:%M:%S %p) | |
%R - 24-hour time (%H:%M) | |
%T - 24-hour time (%H:%M:%S) |
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