Vernal Equinox Marks Arrival of Spring

This year, the vernal equinox officially arrives on Tuesday, March 19 at 11:06 pm in Washington, D.C. That is 3:06 UTC on Wednesday, March 20. At that time, the sun will be exactly above the Earth’s equator. And in the Northern Hemisphere, the day marks the beginning of spring.

Source : https://learningenglish.voanews.com/a/vernal-equinox-marks-arrival-of-spring/7532255.html