<P> A solstice is an event occurring when the Sun appears to reach its most northerly or southerly excursion relative to the celestial equator on the celestial sphere . Two solstices occur annually , on about 21 June and 21 December . The seasons of the year are directly connected to both the solstices and the equinoxes . </P>
<P> A solstice is an event occurring when the Sun appears to reach its most northerly or southerly excursion relative to the celestial equator on the celestial sphere . Two solstices occur annually , on about 21 June and 21 December . The seasons of the year are directly connected to both the solstices and the equinoxes . </P>
when does the summer and winter solstice occur
when does the summer and winter solstice occur
about 21 June and 21 December
about 21 June and 21 December