Hi Arlo,
writing the date like "7:30 nachm." which means translated "7:30 p.m." is unusal in German. Most user prefer 24 hour format like "19:30", only a few prefer "7:30". S it would be helpful, if give the user a chance to specify the time format, or you use 24 hour format to catch the 95 % of user ;-)
regards
Andy