%_load manual.var%
@b : short month name (Jan, Feb, Mar, ...)
@B : full month name
@m : month 1-12
@j : day of the year, 1-365
@Z : time zone
@y : two digit year
@Y : four digit year
@d : day of the month
@X : hh:mm:ss
@H : hours (24-hour format)
@M : minutes
@S : seconds
@z : time zone offset
@a : short day name (Mon, Tue, Wed, ...)
@A : full day name
@p : AM/PM
@I : 12 hour time hour (1 to 12)
You can combine them like this:
%%l_tm @A, @B @m @Y at @I:@M @p @Z (@z)%%
This would give you something like:
Tuesday, January 4, 2001 at 3:12 PM EST (-0800)