Coturnix quail hatching early, how long to wait

[mabelsmicrofarm]

So I put my 60 eggs in on the 26th of October, candled them and removed the turner on day 14 (November 10th) and 19 were infertile. I had a ton hatch yesterday! (Day 16) like 20 yesterday and 5 lastnight/early this morning. I've never had them hatch early before always perfectly on time lol so how long should I wait for the final 15 to hatch? I usually go until day 21 then float test, should I wait until day 19 since they all hatched so early?

 

[WVduckchick]

Usually 48 hours is a general guideline from first hatch (not pip, but actual hatch) to last hatch. Its possible for ones to hatch later, but if they were all incubated together, same conditions, etc, they "should" all hatch within about 48 hours.