I just took a look. It seems that there is some confusion in the code between the dawn offset you are setting, and another (old) parameter called "Pre-dawn" which is in the same options menu several rows above "dawn offset".

I'm not sure whether Pre-dawn is something that should be removed from the code or not, it predates me, but I'll think about it. In the mean time, I believe that if you set Pre-dawn to 0, you will get the performance you desire.

Hy

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