This is a synonym for @samp{%m/%d/%y}.
@item %e
This stands for the day of month, blank-padded.
+@item %F
+This stands for the ISO 8601 date format, i.e., @samp{"%Y-%m-%d"}.
+@item %g
+This stands for the year corresponding to the ISO week within the century.
+@item %G
+This stands for the year corresponding to the ISO week.
@item %h
This is a synonym for @samp{%b}.
@item %H
This stands for a tab character.
@item %T
This is a synonym for @samp{%H:%M:%S}.
+@item %u
+This stands for the numeric day of week (1--7). Monday is day 1.
@item %U
This stands for the week of the year (01--52), assuming that weeks
start on Sunday.
+@item %V
+This stands for the week of the year according to ISO 8601.
@item %w
This stands for the numeric day of week (0--6). Sunday is day 0.
@item %W