Assertion: calendar's year | /r/DefinedAs | mean interval
Facets:
value: between vernal equinoxes
type: TEMPORAL
Source sentences:
text: The year mentioned above is the length of the tropical year defined as the mean interval between vernal equinoxes (1582-2000 C.E.) : 365 days, 5 hours, 49 minutes (365.2424 Universal days).