%%a - Abbreviated weekday name
%%A - Full weekday name
%%b - Abbreviated month name
%%B - Full month name
%%c - Date and time representation appropriate for locale
%%d - Day of month as decimal number (01 - 31)
%%H - Hour in 24-hour format (00 - 23)
%%I - Hour in 12-hour format (01 - 12)
%%j - Day of year as decimal number (001 - 366)
%%m - Month as decimal number (01 - 12)
%%M - Minutes as decimal number (00 - 59)
%%p - Current locale's A.M./P.M. indicator for 12-hour clock
%%S - Seconds as decimal number (00 - 59)
%%U - Week of year as decimal number, with Sunday as first day of week (00 - 53)
%%w - Weekday as decimal number (0 - 6; Sunday is 0)
%%W - Week of year as decimal number, with Monday as first day of week (00 - 53)
%%x - Date representation for current locale
%%X - Time representation for current locale
%%y - Year without century, as decimal number (00 - 99)
%%Y - Year with century, as decimal number
%%z,%%Z - Either the time zone name or abbreviation, depending on registry settings; no characters if time zone is unknown
%%%% - Percent sign
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