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3.3.7. Manualy Adjusting the System Clock

To update, or step, the system clock immediately, bypassing any adjustments in progress by slewing the clock, issue the following commands as root:
~]# chronyc
      chrony> password
      200 OK
      chrony> makestep
    200 OK
In Fedora, the real-time clock should not be manually adjusted as this would interfere with chrony's need to measure the rate at which the real-time clock drifts if it was adjusted at random intervals. By default, rtcsync will inform the kernel the system clock is synchronized and the kernel will update the real-time clock in 11 minute intervals.