Ileave los angles at 11: 45am aug.5, and arrive in tokyo japan at 5: 00pm aug. 6. why does the flight arrive the next day , when the flight is only 12hrs. and 15minutes long?

There is time difference between LA and Tokyo

Tokyo, Japan is in a timezone that is 16 hours ahead of Los Angeles (maybe it's 15 hours before Daylight Savings, so we'll go with 15 so it fits the problem c:) If you leave a flight from LA at 11:45 lasting 12 hours and 15 minutes then land in Tokyo, the time in LA will be 12:00 AM on Aug. 6. However, since there is the timezone change, the time in Tokyo when you land is 15 hours ahead. 12:00 AM + 15 hours = 5:00 PM, both on August 6.