I am trying to calculate elapsed travel times for flights. My plan is
to enter the local departure time, the departure city and the local
arrival time and city. These times would be standardised to GMT and a
date difference calculated which would be the theoretical elapsed time
of the flight
I have one Table called Cities which has the name of the city and the
difference from GMT eg Sydney is 10 (ie 10 hrs ahead of GMT), LA is -7
ie 7 hours behind GMT.
I then have a second table called flights with data to record the
departure and arrival times (local ) of planned flights, using combo
boxes to choose the arrival and departure cities. I want the data to
calculate the elapsed time. I assume I will need a flight header
table and a flight detailed table to allow me to calculate when more
than one flight is involved but have never used time differential
calculations before so am looking for some basic starting points
Appreciate any help
Steve