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Welcome Spring Equinox

First Day of Spring 2019: The Spring Equinox

In 2019, spring equinox (also called the March equinox or vernal equinox) falls on Wednesday, March...
March Equinox Fun Facts

Vernal Equinox Oddities

This year, the vernal equinox falls on Wednesday, March 20. Are day and night equal on this day?...
Spring, Summer, Fall, Winter 360

When Do the Seasons Start in 2019-2020?

When do the seasons—winter, spring, summer, and fall—start? Here are your equinox and solstice...
When is First Day of Winter?

Winter Solstice 2019: The First Day of Winter

Winter officially begins with the Winter Solstice on Saturday, December 21, 2019. This is the...
Blizzard

Why February Is Cold

Our coldest months are December, January, and February in North America. Someone recently asked me...
Earth At Aphelion

What are Perihelion and Aphelion?

The Earth is closest to the Sun—or, at the perihelion—about 2 weeks after the December Solstice ...
New England Foliage

Fall Foliage Map 2018

See our new fall foliage map for peak times across America. Help us add to this foliage map with...
Melting Ice Cream

2018 Summer Weather Forecast

Believe it or not, summer is just around the corner! What kind of weather can we expect this year?...
Groundhog Emerging

Groundhog Day and Shadow Fun

Groundhog Day. Just a bizarre tradition involving rodents? Or, rather, marmots? Actually, Groundhog...
The Seasons and Sun Strength

A Better Way to Visualize the Seasons

We’ve grown up with four seasons. But they don’t always match what we experience. What about...
Moon Summer Solstice

Summer Solstice Full Moon in June!

On June  20, 2016, the Full Moon appears on the same night as the summer solstice! It’s rare, all ...
Autumn Leaves Montage

The Autumnal Equinox

Coming up next week is the Blood Moon. Also called the MegaMoon. Or, the Mega Harvest Moon. Or, the...