Equinoxes: March 20 at 09h14 and September 22 at 18h49
Solstices: June 21 at 03h09 and December 21 at 15h12
An equinox occurs twice a year (around 20 March and 22 September), when the tilt of the Earth's axis is inclined neither away from nor towards the Sun, the center of the Sun being in the same plane as the Earth's equator.
A solstice is an astronomical event that happens twice each year when the Sun reaches its highest position in the sky as seen from the North or SouthPole.
Solstice and Equinox Cycle
Source: NASA