convertclock dateString [GMT|{}] [baseClock] Convert dateString to an integer clock value (see getclock). This command can parse and convert virtually any standard date and/or time string, which can include standard time zone mnemonics. If only a time is specified, the current date is assumed. If the string does not contain a time zone mnemonic, the local time zone is assumed, unless the GMT argument is specified, in which case the clock value is calculated assuming that the specified time is relative to Greenwich Mean Time. If baseClock is specified, it is taken as the current clock value. This is useful for determining the time on a specific day. Some examples are: convertclock "14 Feb 92" convertclock "Feb 14, 1992 12:20 PM PST" convertclock "12:20 PM, Feb 14, 1992"