Assertion: leap year's day | /r/HasProperty | inserted at the end of february
Facets:
value: every fourth year
type: TEMPORAL
Source sentences:
text: The Julian calendar featured a 12-month, 365-day year, with an intercalary day inserted every fourth year at the end of February to make an average year of 365.25 days.
text: The term leap year gets its name from the fact that while a fixed date in the Gregorian calendar normally advances one day of the week from one year to the next, in a leap year the day of the week will advance two days due to the year's extra day inserted at the end of February.