score:7
12:45 pm is also 12:45 o'clock in international time, i.e. 45 minutes after noon or 15 minutes before 13:00 o'clock.
Your flight leaves at 12:45 LA time. It takes 11 hours and 10 minutes so it arrives in Narita at 23:55 LA time. Japan is 16 hours ahead of LA, so the local time will be 15:55 or 3:55pm in American convention.
Upvote:1
PM is an acronym for the Latin post meridiem, which means 'after noon'. Your flight is scheduled to depart at 45 minutes after midday, i.e. at 12:45 hours.
AM stands for ante meridiem, which means 'before noon'.