flowering time

hello i just got a quick question but its ok 2 put them on 11/13 by that i mean 11 hours light and 13 hours dark is this cool????
any help people ??

ya it will work but why not 12/12 like mother nature

i dunno because my timers arent the greatest and i could be just over 12 hours light would it matter if it was just over or better 2 do like i said???

go to walmart and buy a multi tab timer really easy to set.their like 5 bucks