The locals' presale actually lasted all day. Folks showing up as late as 5:30 pm got tickets.
The general sale today was another story. Stones day sold out by around 11:30, and if you were buying online and weren't in the virtual queue at 10 am sharp, you were out of luck. VIP packages for 2nd weekend also sold out.
Plenty of tickets are available for the other 7 days, though.