Ruby Pocket Reference

Time Formatting Directives

These directives in Table 20 are used with the method Time#strftime.

Table 20. Directives for formatting time

Directive	Description
%a	The abbreviated weekday name (Sun).
%A	The full weekday name (Sunday).
%b	The abbreviated month name (Jan).
%B	The full month name (January).
%c	The preferred local date and time representation.
%d	Day of the month (01 to 31).
%H	Hour of the day, 24-hour clock (00 to 23).
%I	Hour of the day, 12-hour clock (01 to 12).
%j	Day of the year (001 to 366).
%m	Month of the year (01 to 12).
%M	Minute of the hour (00 to 59).
%p	Meridian indicator (AM or PM).
%S	Second of the minute (00 to 60).
%U	Week number of the current year, starting with the first Sunday as the first day of the first week (00 to 53).
%W	Week number of the current year, starting with the first Monday as the first day of the first week (00 to 53).
%w	Day of the week (Sunday is 0, 0 to 6).
%x	Preferred representation for the date alone, no time.
%X	Preferred representation for the time alone, no date.
%y	Year without a century (00 to 99).
%Y	Year with century.
%Z	Time zone name.
%%	Literal % character.