Retrieves the latest revision on the selected branch whose checkin date/time is less than or equal to date. The date and time can be given in free format. The time zone LT stands for local time; other common time zone names are understood. For example, the following dates are equivalent if local time is January 11, 1990, 8pm Pacific Standard Time, eight hours west of Coordinated Universal Time (UTC): 8:00 pm lt 4:00 AM, Jan. 12, 1990 default is UTC 1990-01-12 04:00:00+00 ISO 8601 (UTC) 1990-01-11 20:00:00-08 ISO 8601 (local time) 1990/01/12 04:00:00 traditional RCS format Thu Jan 11 20:00:00 1990 LT output of ctime(3) + LT Thu Jan 11 20:00:00 PST 1990 output of date(1) Fri Jan 12 04:00:00 GMT 1990 Thu, 11 Jan 1990 20:00:00 -0800 Internet RFC 822 12-January-1990, 04:00 WET Most fields in the date and time can be defaulted. The default time zone is normally UTC, but this can be overridden by the -z option. The other defaults are determined in the order year, month, day, hour, minute, and second (most to least significant). At least one of these fields must be provided. For omitted fields that are of higher significance than the highest provided field, the time zone's current values are assumed. For all other omitted fields, the lowest possible values are assumed. For example, without -z, the date 20, 10:30 defaults to 10:30:00 UTC of the 20th of the UTC time zone's current month and year. The date/time must be quoted if it contains spaces.