Ruby Date and Time symbol meanings

gistfile1.rb

 # Date and Time symbol meanings:

    %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..31)
    %H - Hour of the day, 24-hour clock (00..23)
    %I - Hour of the day, 12-hour clock (01..12)
    %j - Day of the year (001..366)
    %m - Month of the year (01..12)
    %M - Minute of the hour (00..59)
    %p - Meridian indicator (``AM''  or  ``PM'')
    %S - Second of the minute (00..60)
    %U - Week  number  of the current year, starting with the first Sunday as the first day of the first week (00..53)
    %W - Week  number  of the current year, starting with the first Monday as the first day of the first week (00..53)
    %w - Day of the week (Sunday is 0, 0..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..99)
    %Y - Year with century
    %Z - Time zone name
    %% - Literal ``%'' character

     t = Time.now
     t.strftime("Printed on %m/%d/%Y")   #=> "Printed on 04/09/2003"
     t.strftime("at %I:%M%p")            #=> "at 08:56AM"