Every six months, the equinox splits Earth's day almost in half. Here's how it happens—and why people have celebrated it since ancient times. A flock of swans fly at sunrise on the first day of ...

Spring is here — officially, at least. The vernal equinox arrives on Thursday, marking the start of the spring season for the Northern Hemisphere and the fall in the Southern Hemisphere.

At 9.01am today, March 20th, the sun crossed the Earth’s equator, marking the vernal equinox, the date when the direction of sunrise is due east and sunset due west. The Earth’s axis is at ...

According to the planetarium, the best times to view Chicagohenge for the vernal equinox come just after local sunrise and just before local sunset, with the views able to be seen by looking due ...