<PRE><B>Question 1043119</B>
You are right that we need to work with a single time zone.
9AM in NY is Eastern time.
1:35PM in Las Vegas is Pacific time.
So our trip starts at 6AM Pacific Time and finishes at 1:35PM Pacific time.
The total time of our trip is 7 hours and 35 minutes,
6 hours from 6AM to 12AM, 1 hour and 35 minutes from 12AM to 1:35PM
The amount of time actually flying is
( 7 hours 35 minutes ) - ( 50 minutes , the time of the layover )
7 hours 35 minutes - 50 minutes
or
( 6 hours + 1 hour + 35 minutes ) - ( 50 minutes )
convert the 1 hour to 60 minutes
( 6 hours + 60 minutes + 35 minutes ) - ( 50 minutes )
( 6 hours + 95 minutes ) - ( 50 minutes )
( 6 hours ) + (95 minutes ) - ( 50 minutes )
6 hours 45 minutes</PRE>