how to not buy a calendar each year

i was all excited when i realized i could use my free-from-an-estate-sale "four victorian photographers" 1968 calendar from the Met. my favourites are by Braun. this week i was disapointed to find out that only two months of it are accurate for our current year, as 1968 was a leap year. the pictures are still nice plus i also have a "memory jogger" from 1962 which works. being a mac user i depend on the good ol' ical for things i should really not forget about.