I spent a little time trying to solve that mystery. Take a close look at the faintly printed numbers. These match the rise and set times in Oxford from May 6-15 if you subtract exactly 4 hours. Then it appears that a 12:37 time was changed to exactly midnight along with all the other numbers being adjusted by 37 minutes as well. Near the end he seems to make some mistakes in the ordering.

The difference in time between moonrise and moonset varies by latitude so you can be sure that he got his information from a source that calculated it for someplace near Oxford's. The Royal Observatory at Greenwich? London?

https://www.timeanddate.com/moon/uk/...th=5&year=1944
When looking at these numbers keep in mind they might be using double summer time because of the war effort. So initially subtract 6 hours instead of 4.