Anyone not using light to up egg production?

[Egghead_Jr]

I have read that if you use a light, it needs to go in earlier in the morning, not later at night. Take your daylight hours & subtract from 15, then have the light turn on that many hours before sunrise.

It does not matter one iota if the light is added in morning or evening. Some people think the chickens get stuck off the roost if timer shuts off- more personal preference. I light evening and my birds are on the roosts. 15 hours is more than needed, commercial operations use 14 hours. I've used 12 hours and not seen a slack from fall laying to winter lay. Anywhere from 12 to 14 hours total is good.