13 hours of light?

[AmCanyonStables]

So I am looking at the sunrise and sunset charts, debating about supplementing light for my California chickens so I get eggs during that critical holiday time! I also saw a post that said it was better for the chickens to let them rest over the winter, which does sound more natural and possibly better.
Has anyone tried 13 hours of light rather than 14? Maybe they would keep laying, but a little less, so they would get some rest?
OR - is this just silly.

 

[gkeesling]

In Indiana we are down to a little less than 12 hours between sunset and sundown now. I can definitely tell my chickens are starting to slow down. I'm putting a 100W light bulb with a timer in the coop this next week. I've not heard anything about the resting in the winter part. Everything has it's purpose I guess. It's the purpose of my chickens to lay eggs.