How long can a broody be of the nest?

[HattieScratchy]

I have a1st time broody silkie that was off the nest for 2.5-3 hrs today... the eggs should be on day 13. It's 43° today of that helps.

 

[Welshies]

She can be off anywhere from half an hour to six hours.
While artificially incubating eggs I've had a power outage for 13 hours in -4F weather. 65% of the eggs still hatched.

 

[HattieScratchy]

She can be off anywhere from half an hour to six hours.
While artificially incubating eggs I've had a power outage for 13 hours in -4F weather. 65% of the eggs still hatched.

#this gives me so much hope!!! Lol thank you! I've been so worried that they died because they got cold.