Just do what I used to do, fill the damn thing in each month, about 5 minutes after you get your roster. Generally it would include such delightful off base localities as Baku, Istanbul, Nice (in the summer), and even Karachi. All you will note within the 2hr time-zone.
From that day to this I've never had a call on a day off and my work phone would go on exactly 2 hrs before departure
I should add for clarity's sake that I did this purely as a mechanism to protect my days off, imagine for a minute if fleet got 3800 or so off base notes every 23rd 24th of the month...Costa would have to wait...for a minute.