Not near Flagstaff myself (Manchester, UK) but this matches about four other reports I've seen on here from that same window of dates, which is mental really. The lost time bit is the part that always gets me with these - you can explain away lights pretty easily but lost time is a different beast entirely.
Anyone who was there, please try and write down everything you remember before the details fade, even the stuff that seems boring or unrelated. The mundane details are usually where the interesting patterns show up when you compare accounts.
Also worth checking if anyone else in your area felt unusually tired or had vivid dreams that night, people often don't connect those things to the main event but theres a decent overlap in the literature.