Do you mean, how many days out should you buy weeklies??? I buy weeklies on $SPY that expire the next day, like today, I bought Sept21st options, On Fridays I usually never buy up options that expire the same day. Only if the trade looks extremely good, Ive learned not to hotdog it and try to trade the impossible hahaha. Its very tempting though, because the rewards are big. But so are the jackpots on the powerball lotto, whats your chance of winning the jackpot though ;) but like I said, if it was yesterday, Id by this weeks weeklies on $SPY