I'm doing a pub crawl (Erin Express) tomorrow in Philly and am supposed to meet up around 10:00 to pregame tomorrow and would like to set an alarm tonight. However, while I have a back up alarm always, I like to save it for that (a back-up). What time should I set it on an iPhone to wake up tomorrow at true 8:30 (legal time in Pennsylvania)? By true 8:30, I mean 9:30 tonight with the 8:30 being after I've "sprung forward." I hope this made sense. Thanks!