is it normal for iphone 13 stopwatch to reset back to zero after 24 hours?

I have been using iPhone 13 Max Pro stopwatch for something that could take 2-3 days to finish. I'm not sure what is the exact time the stopwatch reset to 0 but I checked at 22 hrs 20 minutes and it is still working accordingly but when I checked in the following morning, it is always shows 00:00.00. I ran into this problem at 4-5 times already. Is this normal?

Thanks in advance,