Assertion: leap year | /r/AtLocation | the gregorian calendar
Facets:
value: in line with the solar year
type: OTHER
value: out of every 400
type: OTHER
Source sentences:
text: In the Gregorian Calendar, which is used by most of the world, a leap year occurs every four years or 97 years out of every 400.
text: Leap years occur every four years to keep the Gregorian calendar in line with the solar year.