- - These occur in September and March, sing.
- - Biannual occurrence in which bovine follows side of slope that's one in five
- - March or September date
- - September/March date
- - Queen in love embraced by old date in March?
- - Vernal or autumnal occurrence
- - March moment
- - March 21 occurrence
- - September occurrence
- - March or September event
- - March 21 or September 23.
- - March time?
- - March event?
- - Point to one of five with the beast, one occurs in autumn
- - Occasion in spring or autumn when day and night are of equal length
- - Time when day and night are of equal length
- - Day when periods of light and dark are equal
- - Occasion when night and day are of equal length
- - Get half equity in ox, when night and day are equal
- - silly don quixote party and contest finally cancelled in semiannual event
- - point at which earth's equator is closest to the sun; this occurs twice every year
- - Who in France tucks into wild oxen as a regular event?
- - Vernal or autumn?
- - When the sun is directly above the equator
- - When the sun crosses the equator
- - When night and day are of the same length
- - When day and night are of equal length
- - When day and night are equal
- - When day and night are approximately the same duration
- - (n.) animal that's half horse, half cow
- - Horse briefly ahead of bovine for a day in September, say?
- - In astronomy, a point on the celestial sphere at which the ecliptic intersects the celestial equator
- - Biannual celestial event
- - Semiannual astronomical event
- - Time of equal length of day and night
- - Like a horse without a tail, steer into biannual event
- - Time of year when night and day are equal
- - Time of equal night and day
- - Autumnal --
- - Semiannual event
- - Occasion for gathering at Stonehenge
- - When day and night have the same length
- - Semiannual calendar event
- - Time when sun crosses equator
- - Event heralding spring
- - Vernal, say
- - Twice-yearly event
- - Occasion at Stonehenge
- - Vernal or autumnal ......
- - Time between solstices
- - September event
- - Time when day and night are the same length.
- - Time when sun's center crosses equator.
- - When night and day are of equal length.
- - Time of year
- - Vernal
- - Fall time
- - Spring time
- - See 13-Down
- - Like horse, tailless bovid's in biannual event
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