Earth Science project, time change help

Earth Science project, time change help?
If I leave on a 10 hour long, 9pm flight from Honolulu Hawaii, to Sydney, Australia, what time will it be in Sydney when i arrive? I'm doing an Earth Science Regents project and I have no idea how to do the time change when you're in a plane..
Earth Sciences & Geology - 2 Answers
Random Answers, Critics, Comments, Opinions :
1 :
You can answer it by taking the length of the flight and the number of time zones you will cross. If the flight is 10 hours long and you cross 9 timezones, you will arrive at 10 the next morning because you also cross the international date line. My numbers are not accurate, look up the actual numbers.
2 :
in usa it woude be 9. friday but when you go to austarlia it will be saturday 10 and the time will be 6.28 and in the usa it woude be 9.28 so in australia they 9h ahead hope this helped