It’s about water temperature. Fish know what to do according to that temperature. Water gets cold, move to deeper warmer water. Water warms up, move to the shallows. Which the last 10 years or so the calendar hasn’t cared about. I remember a few seasons ago here in central Michigan, we basically had first ice about every 3 weeks and the fish acted accordingly. Mostly staying on those first/last ice patterns because that was the weather/ice trend.
Dependong on your body of water, if you have current, springs, or if its shallow enough to hold green weeds all season, that could help dictate patterns too. Like hardwater diehard said, I’d start in the shallows and look for healthy vegetation.