Without argument, or with the -capture flag, this command will output the target date and time string according to the target's locale. With the optional flag the captured output string can be accessed from the get-captured-output command. Alternatively either run-until-job or wait-for-job, with the -capture flag, can be used.
With the -now flag, set the time using the host system's current date and time. With the datetime argument, set the date and time using a string that must be of the RFC2822-date format. For example "2014-01-31 14:15:16" or "Fri, 31 Jan 2014 14:15:16". The date string may contain a UTC timezone suffix.