Thanks. Yes, mine is the same (Dec 22), but that's just the rolling end date of the travel cert on the app. The actual fact is that my second dose was in May 21 and my booster in Nov 21, so that will be 300 days approx since my booster if I cruise in September. I just don't understand how it affects the 270 day vax rule that a few of the companies are insisting upon.