dumb query. If you sell calls on stock you own 6 months out? what happens

[Cabin1111]

What do you mean by
"PS Including the day after (Saturday), of the close of the option..." Are you saying that the call can be exercised the Sunday after a Friday expiration?

Just off the net. You now have weekly and daily options...

Do options expire on Friday or Saturday?

The expiration time is when the options contract becomes void and no longer carries any value. Usually, the last day of trading is the third Friday of the month. However, the actual expiration time is the following Saturday at 11:59 a.m. EST.