The spring equinox occurs on March 20, 2024, at 3:06 UTC.
The exact date/time varies by location due to time zones.
For much of the Western Hemisphere, the equinox falls on March 19th.
• Anchorage (Alaska): 7:06 p.m. Tuesday • Las Vegas (Nevada): 8:06 p.m. Tuesday • Guadalajara (Mexico): 9:06 p.m. Tuesday • Chicago (Illinois): 10:06 p.m. Tuesday
The equinox marks the official start of spring in the north.
Simultaneously, the Southern Hemisphere begins autumn.
The equinox is caused by Earth's tilt relative to the sun.