Statements (16)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
Calendar concept
|
| gptkbp:alsoKnownAs |
gptkb:Bissextile_year
gptkb:Intercalary_year |
| gptkbp:defines |
A year with an extra day added to keep the calendar year synchronized with the astronomical year
|
| gptkbp:extraDay |
February 29
|
| https://www.w3.org/2000/01/rdf-schema#label |
Leap Year
|
| gptkbp:introducedIn |
gptkb:Julius_Caesar
45 BC |
| gptkbp:notALeapYearIf |
Year is divisible by 100 but not by 400
|
| gptkbp:occursEvery |
4 years
|
| gptkbp:purpose |
To align calendar year with Earth's orbit around the Sun
|
| gptkbp:usedIn |
gptkb:Gregorian_calendar
gptkb:Julian_calendar |
| gptkbp:bfsParent |
gptkb:Matthew_Goode
gptkb:Carton_House |
| gptkbp:bfsLayer |
5
|