System time not synchronized

Problem Description
I experienced an extended power outage; after the power was restored and the freedombox powered on, I ran the diagnostics app and found the time is now out of sync. After running the timedatectl command several times, I found the local/universal time and the rtc time are drifting apart. Note the difference in time goes from 8 min 10 sec to 8 min 36 sec.

timedatectl

Information

  • FreedomBox version: 21.0
  • Hardware: Olimex A20-OLinuXino-LIME2
  • How did you install FreedomBox?: pre-installed