Seasons Articles

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Groundhog Day and Shadow Fun

Groundhog Day. Just a bizarre tradition involving rodents? Or, rather, marmots? Actually, Groundhog...

First Day of Spring 2020: The Spring Equinox

In 2020, the spring equinox (also called the March equinox or vernal equinox) falls on Thursday,...

When Do the Seasons Start in 2020?

The spring equinox falls on March 19, 2020. When do all of the four seasons—spring, summer, fall,...

What Are Perihelion and Aphelion?

Earth reaches at its closest approach to the Sun near midnight on January 4–5, 2020. We call this...

Winter Solstice 2020: The First Day of Winter

The winter solstice is Monday, December 21, 2020. This is the astronomical first day of winter in...

2019 Fall Foliage Map

Have the leaves start changing? When will they peak? Check out the latest on our interactive Fall...

Midsummer Day 2019: Why (and How) is Midsummer Celebrated?

Are you familiar with Midsummer Day (traditionally June 24)? Why is called “midsummer” when it’s so...

2019 Summer Forecast: Hotter Temps Out West, Rain for Others

Summer officially begins this Friday, June 21, and it’s shaping up to be another hot one—for some...

Vernal Equinox Oddities

This year, the vernal equinox falls on Wednesday, March 20. Are day and night equal on this day?...

Why February Is Cold

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

2018 Summer Weather Forecast

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

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...

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 ...

The Autumnal Equinox

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