In the Gregorian calendar, an end-of-century leap year (often referred to as a century leap year) is a year that is exactly divisible by 400 and, as with every other leap year, qualifies for the intercalation of February 29. End-of-century years that are not divisible by exactly 400 are common years. The years 2000 and 2400 for example, are end-of-century leap years in a century with 36,525 days, while 1700, 1800, 1900, 2100, 2200, 2300, 2500, and 2600 are common years in a century with 36,524 days. Leap years divisible by 400 always start on a Saturday, and thus the resulting upcoming February 29 (the leap day) is always on a Tuesday.