Equinoxes

March 20, 12^h 33^m

September 22, 22^h 23^m

Solstices

June 21, 06^h 46^m

December 21, 18^h 35^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.

Note: Time in every page is UT (universal time).
For Kyiv Local_Time=UT+2^h (and Local_Time=UT+3^h for summer time).