Equinoxes

March 21, 00^h 07^m

September 23, 09^h 51^m

Solstices

June 21, 18^h 06^m

December 22, 06^h 08^m

Glossary

Equinox:

either of the two points on the celestial sphere at which the ecliptic intersects the celestial equator; also, the time at which the Sun passes through either of these intersection points; i.e., when the apparent longitude of the Sun is 0^o or 180^o.

Solstice:

either of the two points on the ecliptic at which the apparent longitude of the Sun is 90^o or 270^o; also, the time at which the Sun is at either point.

Universal Time (UT):

a generic reference to one of several scales that approximate the mean diurnal motion of the Sun; loosely, mean solar time on the Greenwich meridian (previously referred to as Greenwich Mean Time).

Note: All time moments are given in Universal Time (UT) units.
For Kyiv Local_Time=UT+2^h (and Local_Time=UT+3^h for summer time).