I have pointed my S4 to solo.ckpool.org

Can someone answer a basic question for me.

If I were to turn my miner on in the morning and then turn it off before
I go to bed, apart from the hours of mining lost during the night,
do I still have a equal chance of finding a block while it's on?

I am wondering if turning it on and off everyday is an ok thing to do if one did not want it on at night?