Is purchasing option s contracts on Friday stupid because of Theta?

Hey guys, I've been playing with options on RobinHood the past 4 months or so.

Just throwing $100 in here and there. I've done okay, currently up $445 and some change.

I'm wondering though, is it stupid to buy 2-4 week expiration options contracts on a Friday due to Theta and time decay and the weekend?

Or does Theta only count on market days? I'm a little confused here, I see some options I think are promising and want to pounce, however I feel like i should just wait until Monday because of the theta. I don't want to lose money 2 days when it's not even possible to make money.

Submitted January 04, 2019 at 01:09PM by WillyDrumDrum http://bit.ly/2Rb8Yhs