All Chickens are on differant cycles. Most lay an egg every 24- 36 hours. They will lay in the morning and lay a little later each day till it gets too dark to lay, then they take a day off and start again in the morning.
Actually it takes 25 hours to produce an egg. Each hen will lay a little later each day until the end of the clutch. Some will then go broody and some will take a leave and start to lay again in the morning. Egg collection will vary from time to time depending on your hens cycle.