The autumnal equinox doesn't just mark a seasonal shift, but also increases the chances of dazzling auroras thanks to the Earth's orientation and magnetic field The National Oceanic and Atmospheric ...

The Fall Equinox marks the official start of autumn in the Northern Hemisphere, representing a key shift in Earth’s relationship with the Sun. While it is often linked to equal day and night, the ...

Add Yahoo as a preferred source to see more of our stories on Google. The official last day of summer is Monday, Sept. 22, but for many, it's considered over after the Labor Day holiday or when kids ...

Day and night will get equal time for a brief moment Monday as much of the world heads into fall. The autumnal equinox arrives Monday, marking the start of the fall season for the Northern Hemisphere ...

Northern lights or aurora borealis illuminate the night sky over Vienna during a geomagnetic storm on May 11, 2024. The planet is experiencing its first "extreme" geomagnetic storm since 2003, a US ...

Ohio has seen a lot of winter weather. When does spring start? When is daylight savings time? Here's what we know about ...

The vernal equinox, marking the first day of spring, occurs on Thursday, March 20, 2025, at 5:01 a.m. ET. An equinox happens when the sun's rays are directly over the equator, resulting in ...

This story was updated to add new information. Spring has sprung, bringing warmer days and blooming flowers. Thursday is the first day of spring, or the vernal equinox, in the Northern Hemisphere.