the solar calendar now in general use, introduced by Gregory XIII in 1582 to correct an error in the Julian calendar by suppressing 10 days, making Oct 5 be called Oct 15, and providing that only centenary years divisible by 400 should be leap years; it was adopted by Great Britain and the American colonies in 1752
a list or register of events (appointments or social events or court cases etc)
a system of timekeeping that defines the beginning and length and divisions of the year
a tabular array of the days (usually for one year)
