Hi Manu, I reviving the topic because I have been testing with the GPS line in Touratp.ini and I think I've found the way to change the hour of session night starts.
For example, for Australian Open I added the GPS line and I introduced "22 0", so the night session now starts before: if now I start the match at 8pm, it starts in session night directly, and if I start the match at 7pm, 1 hour after night session starts automatically, but it's strange because if I start the match at 6pm, it has to pass three and half hours for the night session starts automatically...
I'm working with no mods, just a new profile with the INI and Text folder, to descart the problem could be because the mod.
If the match starts at 8pm ---->
https://ibb.co/8nkMrqPIf the match starts at 7pm ----->
https://ibb.co/x1n6xBF ---->
https://ibb.co/0JnkmwHIf the match starts at 6pm ----->
https://ibb.co/RpYSQz3 ---->
https://ibb.co/z22TV6f