@Wayne-TP Thanks for help! Had forgotten I experimented with using the Home/Away triggers in Google Home app. Haven't bother testing it at the moment (getting late) But turning them off ought to fix...

Effective time 16:00 - 22:00 + When: Arrive Then turn on device Seems like Arrive trigger (home) overwrites the effective time that I have set. Since the lights turns on no matter what time I arrive...