* Vernal Equinox: This occurs around March 20th or 21st. At this point, the sun moves from the southern hemisphere to the northern hemisphere.
* Autumnal Equinox: This occurs around September 22nd or 23rd. At this point, the sun moves from the northern hemisphere to the southern hemisphere.
Important Note: It's not about the time of day, but rather the date. On these specific equinox dates, the sun crosses the celestial equator at noon (12:00 PM) Greenwich Mean Time (GMT). However, the exact time will vary depending on your location's longitude.
