Functions that require a date-time to be specified in ISO 8601 format (<iso-date-string>) will accept the following formats.
Complete date: YYYY-MM-DD (eg 1997-07-16) Complete date plus hours and minutes: YYYY-MM-DDThh:mmTZD (eg 1997-07-16T19:20+01:00) Complete date plus hours, minutes and seconds: YYYY-MM-DDThh:mm:ssTZD (eg 1997-07-16T19:20:30+01:00)
where
YYYY = four-digit year MM = two-digit month (01=January, etc.) DD = two-digit day of month (01 through 31) hh = two digits of hour (00 through 23) (am/pm NOT allowed) mm = two digits of minute (00 through 59) ss = two digits of second (00 through 59) TZD = time zone designator (only Z is accepted)
Times are always interpreted as GMT (UTC) times regardless of whether a "Z" time zone designator is appended or not. Time zone designators of the form "+hh:mm" are not accepted. Be careful, if you examine the resulting files in a different time zone, it may display times in local time. This is not an error.