My orange pi PC and orange pi one used to crash like this. It was fixed by running a more recent linux kernel, I recall it being stable in linux kernel 5.7 and above.
From your pastelog, i see you are running an older version of armbian and using 5.4 linux kernel. My crashing back to 197X year problem went away I think after upgrading to 5.7 linux kernel or above. It used to hang and reboot into year 197X every 3 to 17 days. I can confirm fixed cpu speed made it stable but with the current mainline kernel there is no need for this anymore.