Originally Posted by
anabolism
Yes, "365 days" is clear and not ambiguous, except when a leap year comes into play. If my first flight is, say, February 28, 2016 (a leap year that has February 29), can my last flight be February 27 of the following year, or must it be February 26?
I suggest that it's clear and unambiguous regardless of whether or not it's a leap year. 365 days is 365 days. Doesn't matter when the month name or year number changes, or how many days there are in a year.