D espite its age, Excel continues to evolve with new functions being added over time. There are newer better Excel functions ...
That being said, some pilots log their hours in one logbook with the notation "MIL" or "CIV." Others have one part of the logbook for military hours and another for civilian hours.
DST will end at 02:00:00 AM, Sunday, Oct 27, 1918. When local clocks are to be set backward by 1 hour.
DST will end at 03:00:00 AM, Sunday, Mar 25, 1917. When local clocks are to be set backward by 1 hour.