Seasons for the Northern Hemisphere, 2019
- Vernal Equinox: Mar. 20, 5:58 P.M. EDT (22:58 UT*), Sun enters sign of Aries; spring begins.
- Summer Solstice: June 21, 11:54 A.M. EDT (16:54 UT*), Sun enters sign of Cancer; summer begins.
- Autumnal Equinox: Sept. 22, 3:50 A.M. EDT (08:50 UT*), Sun enters sign of Libra; fall begins.
- Winter Solstice: Dec. 21, 11:19 P.M. EDT (04:19 UT*, the following day), Sun enters sign of Capricorn; winter begins.
*Universal time (UT), also known as Greenwich mean time (GMT). See Astronomy for a conversion table of universal time.