value (which is always measured in UTC), but does switch the accompanying
timezone value.
+
+`--date=human` shows the timezone if the timezone does not match the
+current time-zone, and doesn't print the whole date if that matches
+(ie skip printing year for dates that are "this year", but also skip
+the whole date itself if it's in the last few days and we can just say
+what weekday it was). For older dates the hour and minute is also
+omitted.
++
`--date=unix` shows the date as a Unix epoch timestamp (seconds since
1970). As with `--raw`, this is always in UTC and therefore `-local`
has no effect.