I've never had to add lighting in my coop before...other years my birds layed fine year round. But I have only been getting 1-2 eggs for over 2 months now. (Original flock went through a long molt and younger hens haven't started laying yet). Now that I've gone two days without my egg sandwich for breakfast I've decided it's time to add a light. 
My questions are: is it better to add light in the morning or in the evening, and how long should it take until they start laying again? Thanks so much!

My questions are: is it better to add light in the morning or in the evening, and how long should it take until they start laying again? Thanks so much!
Hens go broody when you don’t want them to… and won’t go broody when you do. 