gmm-format-time-string

gmm-format-time-string is a compiled Lisp function in `gmm-utils.el'.

(gmm-format-time-string FORMAT-STRING &optional TIME TZ)

Use FORMAT-STRING to format the time TIME, or now if omitted.
The optional TZ specifies the time zone in a number of seconds; any
other non-nil value will be treated as 0. Note that both the format
specifiers `%Z' and `%z' will be replaced with a numeric form.