Ovulation day confusion

Mary

Can you tell based on my Ava chart when I ovulated? The bracelet is telling me 12/5 but I didn’t get a solid smiley for the first time until 12/6 so i didn’t think i could even ovulate until about a day after that.

The temperatures are consistent with 12/5 date but my cycles are irregular so i haven’t been able to use Ava to its full capabilities. Any ideas??