What weekend night's are you allowed to park in the parking lot over looking the airport all night.

Pretty much all Bay Area parks are closed at sunset. But if you drive up the street and turn left where the El Torito is and follow that around there's another large public parking lot that is excellent for that that we have been using for decades.

There's no overnight parking...

None. The park closes at sundown

I don't know, have to check with the park department.