Spring officially begins in the Northern Hemisphere on March 20 with the vernal equinox as the entire world experiences an ...

A flock of swans fly at sunrise on the first day of fall in ... Then, in September, nature will once again bring us the autumnal equinox, the time of year that ushers in fall in the North.

With the spring equinox comes one of the biggest moments for photographers in Chicago. Chicagohenge is the time of year when ...

The difference between an equinox and a solstice is based on Earth’s tilt, affecting daylight length and the changing of seasons.

Chicagohenge is a stunning biannual event that happens during the spring and autumn equinoxes, when the sun aligns perfectly with Chicago’s street grid.

Due to Chicago’s mostly symmetrical street grid, sunsets and sunrises align with the grid twice a year when seasons change, for both the vernal and autumnal ... equinox come just after local ...

Meteorologists consider March 1 the start of spring. An equinox occurs twice a year. The autumnal equinox occurs in September – when the Earth's axis is tilted neither toward nor away from the ...

The best views occur at sunrise or sunset ... while the September equinox marks the beginning of autumn. The reverse happens in the Southern Hemisphere, according to the National Geographic ...