Synchronize the hardware clock and the current system time
date
hwclock
Set the hardware clock to the current system time:
hwclock --systohc
Set the system time from the hardware clock:
hwclock --hctosys
sdmrnv [2.25ms]
date
hwclock
Set the hardware clock to the current system time:
hwclock --systohc
Set the system time from the hardware clock:
hwclock --hctosys