This program calculates the elapsed hours, minutes and seconds between two
times. The day, month and year are ignored. If the start time comes after the
end time, the program assumes that midnight is crossed, i.e., the end time is
on the day after the start time.
Times must be entered in 24-hour, "military" form. If you want to know the
elapsed time between 3 pm and 1 am, you'd enter 15, 0 and 0 for the start time,
and then 1, 0, and 0 for the end time. The result would be 10 hours, 0 minutes,
and 0 seconds, and the label after the elapsed time would say 'Midnight was crossed'.
Click on the "Now" button to set the start or end time to the current local time.
As you enter values, the result will be automatically calculated. Use the tab key
to proceed from box to box. You must "leave" a box for the result to be updated,
by clicking outside the boxes, or by hitting the tab key. The Calculate
button forces a recalculation.
If you enter junk, such as letters instead of numbers, you'll see an error