on my embedded device with YOCTO and none ethernet connection I would set a specific date and keep it udpdate after the device power-off. I tryed with :
date --set '2022-05-25 11:17:00'
hwclock --utc --systohc
poweroff
but at power on the dat&time are switched back to old value
The same result using :
timedatectl
where ntp is disable, RTC local in TZ is enable and system clock synchromized is enable.
Where is my mistake?