Schedules when to synchronize the time with a time server. The value can be one of the following:
hourly—To synchronize hourly
multihourly—To synchronize every six hours
daily—To synchronize every day at midnight
a number followed by m to specify an interval of minutes or h to specify an interval of hours
To avoid overburdening the time server, the filer randomly selects the exact time of the synchronization within a 20-minute window of the specified schedule.