Uninstall one mod at a time and start whit the latest install and go back and se if any of them trigger it.
Thats the best advice i can give you. But its an real odd behavoiur you have there. Never heard of it before.
Or move your sub away so you are not so close to port when you save. Like stright out in the middle of nowhere and save and se if that helps.
Or you could allways se it as a roleplaying element that you suffer from a solar eclipse
