ME pilots will probably remember those 'arrival messages' we had to send to Artichoke:
"Ascot 9999 departed EGVN at 0850/0900, arrived ZZZZ at 1300/1310" etc? For my civvy logbook, I would record the 0850 and 1310 times and for my military logbook, the 0900 and 1300 times.
Which was about the only worthwhile purpose for those messages!