We're doing a 4 day visit to Flagstaff & environs to get in some hikes & perhaps a visit to the Grand Canyon.

We'll arrive PHX @ 8:30 PM and it'll probably be closer to 9:30PM by the time we're on the road heading north on I-17 towards Flagstaff. Since it will be past 11PM when we arrive in Flagstaff, we'd like to stop in the Phoenix metro area for some grocery essentials on the drive up. Can anyone suggest where we can find a mall/grocery store located just off of I-17 to quickly grab some stuff and get back on the road?

Another question, is AZ 2 or 3 hours behind east coast time at the moment?

Thanks,

Barry