Since the infamous patch we had on the 22nd of November you can't change the ServerTime anymore. Open your "init.c" file and add the following line right at the bottom of the the weather settings section:

GetGame().GetWorld().SetDate(2018, 6, 12, 7, 3);

The weather section of your file should look like this:

void main()
{
Hive ce = CreateHive();
if ( ce )

ce.InitOffline();

Weather weather = g_Game.GetWeather();
weather.GetOvercast().SetLimits( 0.0 , 1.0 );
weather.GetRain().SetLimits( 0.0 , 0.0 );
weather.GetFog().SetLimits( 0.0 , 0.25 );
weather.GetOvercast().SetForecastChangeLimits( 0.5, 0.8 );
weather.GetRain().SetForecastChangeLimits( 0.1, 0.3 );
weather.GetFog().SetForecastChangeLimits( 0.05, 0.10 );
weather.GetOvercast().SetForecastTimeLimits( 3600 , 3600 );
weather.GetRain().SetForecastTimeLimits( 300 , 300 );
weather.GetFog().SetForecastTimeLimits( 3600 , 3600 );
weather.GetOvercast().Set( Math.RandomFloatInclusive(0.0, 0.3), 0, 0);
weather.GetRain().Set( Math.RandomFloatInclusive(0.0, 0.2), 0, 0);
weather.GetFog().Set( Math.RandomFloatInclusive(0.0, 0.1), 0, 0);

weather.SetWindMaximumSpeed(30);
weather.SetWindFunctionParams(0.1, 1.0, 50);
GetGame().GetWorld().SetDate(2018, 6, 12, 7, 3);
}

This will set the time to 7h30. It's the only workaround until the fix that chaos