When does day21 start?

[SQbrahmas]

Does it start after it has been 21 days or the day before?

 

[Apriljc]

I believe after the eggs have been in the incubator for 20, 24 hour days. So if you put them in at 8 pm on a Sunday, the next Sunday at 8 pm will be 7 full days, the next Sunday at 8 pm would be 14 full days, and the next Saturday at 8 pm would be 20 full days, 8:01 pm on that Saturday would start day 21 and day 21 would end at 8 pm on Sunday.

 

[SQbrahmas]

So if I put the eggs in the incubator 3 weeks ago today at 10 pm, is tomorrow day 22?

 

[Apriljc]

So you put them in at 10 pm three weeks ago on a Tuesday? Then today would be day 21 until 10 pm tonight, after which would be day 22.

 

[angidee]

I have found this question asked alot all over this forum. It seems the answer is varied depending on who you ask.
Some say the first 8 hours don't count, some count it. Some say day one is 24 hours after the incubation starts, some day it is the day it starts.
Personally, I am did a broody hatch and am currently in the process of a incubator hatch. I will figure out the results from those and determine my 21 day count from that.

Good luck!!!