2 moveable days.
4(?) Golden days. They have to get you to home base by 0000 the night before.
Regular days they can fly into as long as they get you to home base by noon of day 1.

So every day 'off' you'll be off by at least noon of day 1 and by midnight the night before if it's your 'golden' days.

End of month 'you fly the month you're in'. In other words days off next month doesn't matter. On call last day of Jan. but have the first couple days of Feb off? Plans on Feb 1? Good luck. They can send you out on a 6 day trip on Jan 30th and you'll be back on Feb 4th.