`iso-local`), the user's local time zone is used instead.
+
`--date=relative` shows dates relative to the current time,
-e.g. ``2 hours ago''. The `-local` option cannot be used with
-`--raw` or `--relative`.
+e.g. ``2 hours ago''. The `-local` option has no effect for
+`--date=relative`.
+
`--date=local` is an alias for `--date=default-local`.
+
`--date=short` shows only the date, but not the time, in `YYYY-MM-DD` format.
+
`--date=raw` shows the date in the internal raw Git format `%s %z` format.
+Note that the `-local` option does not affect the seconds-since-epoch
+value (which is always measured in UTC), but does switch the accompanying
+timezone value.
+
`--date=format:...` feeds the format `...` to your system `strftime`.
Use `--date=format:%c` to show the date in your system locale's
check_show default "$TIME" 'Wed Jun 15 16:13:20 2016 +0200'
check_show raw "$TIME" '1466000000 +0200'
check_show iso-local "$TIME" '2016-06-15 14:13:20 +0000'
+check_show raw-local "$TIME" '1466000000 +0000'
# arbitrary time absurdly far in the future
FUTURE="5758122296 -0400"