yes, 1pm+6 hours is 7pm. LA is 3 hours behind PA, so 7pm-3 is 4pm. 2 hours to get ready and get there, 4pm+2=6pm right on time
Considering the time from Philadelphias frame of reference
1PM + 6 hrs + 1 hr to ceremony location + 1 hr to get ready = 9 PM Philadelphis time
But Los Angeles is 3 hrs earlier , so 9 PM Philadelphis time = 6 PM LA time......she gets to the ceremony right on time........!!!!