Day 20 - No signs of pipping at all

[KikiDeAnime]

I decided to candle the eggs one last time after not candling them for a while. I have 6 eggs and I still see a bit of movement in a few but no pipping at all yet.
Temp has been staying at 99F since Day 18 and humidity is at 69%.
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How long do I wait until I assist? I've assisted in hatching before so I know what I'm doing and how careful to be.

 

[casportpony]

Can you take a picture of the egg being candled?

 

[KikiDeAnime]

Still no pipping
I candled them again and they're still moving around but still no signs of them pipping yet. When should I assist?

 

[randomperson1]

Did they hatch?

 

[User635240]

Isn't the incubation period 21 days? Be patient Don't open those eggs!