input:
23.42 01.14
08.10 17.51
my output is 9
The differ of the two airport is -4 hours.
So the time as the destination local time is below:
23.42-4=19.42   01.14=25.14
08.10           17.51-4=13.51
first duration is 25.14-19.42=5.32
second duration is 13.51-08.10=5.41
so the answer is 5.41-5.32=9
Is it right??
Thanks

My ACed problem show that the answer is 4

Can you tell me the difference between the two airports' local time?
thanks for your reply.