Assertion: calendar's month | /r/HasProperty | shorter 11 days
Facets:
value: consistently
type: DEGREE
Source sentences:
text: It contains 12 months that are based on the motion of the moon, and because 12 lunar months is 12 x 29.53=354.36 days, the Islamic calendar is consistently shorter (11 Days) than a solar year, and therefore it shifts with respect to the Gregorian calendar.