"For The Great Steppe map aka Kazakhstan, I have no clue where you are in those screenshots.
Game day is stuck at 21st june.
Qostanay
https://www.timeanddate.com/sun/@1521667 Daytime 05:18-22:16 "GMT+6"
Due to not finding information for Troitsk, I went for Chelyabinsk
https://www.timeanddate.com/sun/russia/chelyabinsk Daytime 04:13-21:38 "GMT+5"
I guess the 1st batch of photos and 2nd batch are from these areas
https://www.google.com/maps/dir/54.0844 ... m2!4m1!3e0"
Correct , 1st and 2nd batch of photos are from that area. So for Qostanay Sunrise is at 05:18 ( i get it about 02:00 ) and sunset is at 22:16 but at 22:03 you saw how sun was still high above horizon .
For Chelyabinsk area sunrise is at 04:13 but i get it same as in Kazakstan about 02:00 starts daylight , and sunrise is 21:38 i get it about 19:52 so something is not right i guess.
GPS clock is showing local time i guess.
3rd batch of photos was also on Sibir map as i continued driving south towards Aqtobe in Kazakstan.
So sunsets times can be accepted but sunrise times are too diferrent becouse i get sunrise at about 02:00 and at 03:00 it is almost complete daylight.
You said : " In short: The problem here seems to be that the part of Sibir Map you are in, is at MSK and not YEKT."
Yeah, but i get this problem also in germany and rest of europe becouse you saw in germany at 22:00 is still daylight, i don't know how to fix this, before 1.40 patch everything was normal, i used to get night at 21:00 in average and sunrise about 04:30 which is ok . i din't use any new mods that i didn't use before 1.40 patch, everything is same, you can see my mods on last batch of photos