Its simple:
At 0 (London) X on map is +/- zero time (GMT or UTC)
Checked on map coordinations:
21600000 is -12 hours
-21600000 is +12 hours
each +500m longitude = - 1 sec to current 'game' time
each -500m longitude = + 1 sec to current 'game' time
Test:
Sankt Petersburg (east end of Baltic Sea) is at 30° 16' E at game is: +3620600 [m].
+3620600 / 500 is 7241.2 sec = 2 hours and 41 sec (2x3600 + 41.2)
GMT (or UTC) for this position is: current game time - 2h. 41 sec
if current time is 12.00 then GMT/UTC time is 12.00.00 - 2.00.41 = 9.59.19
To check it:
UTC+2.00 is f.e. Russia (Kaliningrad near Baltic Sea)
when GMT/UTC is 9.59.19 at Kaliningrad is +2.00 = 11.59.19
we test it for real game time is: 12.00.00
correct calculations
second to time:
8743 sec = ?
8743/3600 = 2.42... hours = 2 hours (7200sec)
8743 - 7200 sec = 1543 sec
1543/60 = 25.71 minutes = 25 minutes (1500 sec)
1543 - 1500 = 43 sec
8743 sec = 2h 25min 43sec
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If you show me screen with real time and GMT time we'll think about longitude for real nav.
