10.0;calendar (set system calendar), revision 1.0, 88/01/21
calendar (set system calendar) -- Set system calendar clock.
usage: calendar
DESCRIPTION
Use calendar to set or reset the calendar clock in a node. You can also
use it to update the last valid time known to the system, which is stored
on the boot volume. Normally, the clock is set at the factory, and there
is no need to reset it. You should take care if you set the clock
backwards in time, since duplicate unique identifiers (UIDs) may be
generated, resulting in the loss of files. For information on changing
the timezone, see the tz (timezone) command description.
Note that calendar works only on unmounted volumes, so you must invoke it
from the Mnemonic Debugger in order to set the clock on the boot volume.
calendar prompts for all required arguments and options.