I had CL pullet eggs hatching at days 19 and 20 only during the last couple weeks. Then the temperature in the garage dropped about 20 degrees with the change in weather, resulting in an incubator about 1/4 degree F cooler. Yesterday I hatched 5 CL x Penesdensenca pullet eggs on day 21, with one more looking viable for today (6/10 on the crosses).