Thursday is the first day of spring, or the vernal equinox, in the Northern Hemisphere. During an equinox, the center of the sun is on the same plane as the equator. After the vernal equinox in March, ...

Did you know both the astronomical first day of spring and Easter Sunday are tied to the spring equinox? How they relate, ...

the Earth’s equator is aligned directly with the Sun on the vernal equinox. In 2025, that occurs at 5:01 a.m. EDT on March 20. Astronomical seasons are based on the Earth’s position with ...

As the Northern Hemisphere welcomes spring today, the Southern Hemisphere is marked with the first day of autumn.

The vernal equinox marks the official start of spring in the Northern Hemisphere, when the Sun crosses the celestial ... The US falls to its lowest-ever position What is the No. 1 national park?

while astronomical spring starts on March 20 and is based on the Earth's position relative to the sun. The vernal equinox, which occurs at the start of astronomical spring, is when the sun's rays ...

After the vernal equinox in March ... "causes the sun to appear above the horizon when the actual position of the sun is below the horizon," the weather service says. Because the sun takes ...

while the astronomical first day of spring varies based on the vernal equinox. Astronomical seasons depend on the Earth's position relative to the sun, while meteorological seasons are determined ...

The vernal equinox signals the astronomical start ... equal due to the Earth’s tilt and the planet's position in its orbit around the sun. Earth experiences seasonal changes because its axis ...

while astronomical spring starts on March 20 and is based on the Earth's position relative to the sun. The vernal equinox, which occurs at the start of astronomical spring, is when the sun's rays ...

Meteorological spring starts on March 1 and is based on annual temperature cycles, while astronomical spring starts on March 20 and is based on the Earth's position relative to the sun. The vernal ...