The times that hens lay their eggs depends on your timezone and your breed. I have a USA Central timezone and my hens lay at noon (sometimes one egg in the night). If you want exact timing it's best to find out yourself! 

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Thank you Bruce for the information. I must have some brave chicks because I have a huge yard and they roam all over it. The also will cross the fence into the cattle field behind the house but they never go very far from the fence. My girls are all easter babies so I have a while before they lay. When they first get in the coop at night, Little Bit (she is my smallest) will sometimes go over to the nest and lay down until all the big girls get arranged then she will climb up on the roost. So far I have not seen them get in the nesting box in the daytime but they do roam in and out if the coop some. I like the idea of putting fake eggs in there, just hope my grandbaby (who checks for eggs ALL the time) can understand that they are not real. LOL
My girls go to bed on their own, they are so well behaved, im so proudyes, getting them in the coop at bedtime is tricky. i usually put treats in to encourage them. Doc also said 16 hours of daylight and putting a small light in the coop might help them?
That sounds like the cycle the old Vet was talking about, is this cycle for the whole flock or per each individual hen?My chickens follow a 5-6 day cycle.
At the beginning of the cycle, they lay early to mid-morning. Then each day they lay 1-1/2 hours later than the day before until, by the 4th or 5th day, they lay mid-afternoon.
On the last day of the cycle they don't lay at all, starting a new cycle on the following day.
My girls go to bed on their own, they are so well behaved, im so proud
One of my girls does not like to stay in the coop. The others peck at her all the time. If I let them out to run in the yard she will socialize a little with them but there are times when she runs away, or jumps up on my shoulder to get away. Any way I have a box set up for her and she will always go there to lay her egg. The others always go back to the coop to lay theirs. From what I can tell the girls will get use to laying in a certain area and always go back to that area to lay.
My bedtime is before theirs and I like them locked in the interior coop at night. If I wait til dark to go out and shut the door they are all in. Wonder what chickens in Alaska do? When the days are so long?
My chickens follow a 5-6 day cycle.
At the beginning of the cycle, they lay early to mid-morning. Then each day they lay 1-1/2 hours later than the day before until, by the 4th or 5th day, they lay mid-afternoon.
On the last day of the cycle they don't lay at all, starting a new cycle on the following day.