OCaml using Calendar

Some acknowledgement

From the toplevel

# #use "topfind";;
# #require "calendar";;
/usr/lib/ocaml/unix.cma: loaded
/usr/lib/ocaml/str.cma: loaded
/usr/lib/ocaml/calendar: added to search path
/usr/lib/ocaml/calendar/calendarLib.cma: loaded

Note that the library is "Calendar", but "calendarLib.cma" is loaded. So, to set a Date from a String:

# let d = CalendarLib.Printer.Precise_Fcalendar.from_fstring "%F %T" "2011-08-16 16:00:01";;
val d : CalendarLib.Printer.Precise_Fcalendar.t =
Or to print a Date to a String: 
# CalendarLib.Printer.Precise_Fcalendar.to_string d;;
- : string = "2011-08-16 16:00:01"
# CalendarLib.Printer.Precise_Fcalendar.sprint "%Y-%m-%d %H" d;;
- : string = "2011-08-16 16"
# CalendarLib.Printer.Precise_Fcalendar.sprint "%Y-%m-%d %H:%M:%S" d;;
- : string = "2011-08-16 16:00:01"