Assertion: civil calendar | /r/CapableOf | rotate through season
Facets:
value: slowly
type: MANNER
Source sentences:
text: There was apparently no attempt to introduce a leap-year day to compensate for the slippage of one day every four years; as a result, the civil calendar slowly rotated through the seasons, making a complete cycle through the solar calendar after 1,460 years (referred to as a Sothic cycle).