It totally depends upon which contracts you're referring to. Assuming you mean US American-style Equity options (and not ETFs, S&P 500 index options, futures options, or foreign options), then yes--they're always 3rd Friday of the month.
Yeah ive got a credit spread on VLO that expires in Sep. Just got confused because of 5 Firdays this month and wanted to make sure. Thanks for the help.