Help needed - timed ctd

[Props]

Hi all!

First of all I am sorry if this is the wrong place for this topic or if this problem has already been solved (tried the search function with no luck - maybe just too stupid...)

I have encountered a very weird kind of bug, first in my running career (but also in a single mission I created for testing purposes):

Everytime I reach ingame the 8th may 1943 I have a ctd as soon as the clock reaches 7:00 p.m. (except once when it crashed at 7:01 p.m., maybe because due to time comp).
The problems occurs no matter in which boat I am in, where my boat is, what I am doing or which time comp I use ...
I also deactivated all mods and changed realism settings with no luck - so if anyone knows what may cause this problem and how to solve it, please share your knowledge!!! Thanks!

Props