Tue March 28, 2017

2018 Seasons Calendar


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Seasons divide the year into four distinct periods of time named Spring, Summer, Autumn/Fall, and Winter. Each season brings different weather, hours of light, and plant/animal behaviors. The seasons are brought about by the yearly orbit of the earth around the sun and the tilt of the earth's axis. Below are the astronomical dates for the calendar year 2018 for both the northern and southern hemispheres.

Season Date # Days Season Start
Northern Hemisphere
Spring March 20th - Tuesday 357
Summer June 21st - Thursday 450
Autumn/Fall September 22nd - Saturday 543
Winter December 21st - Friday 633
* Local time for Denver, CO. Accurate globally within 24 hrs.

Season Date # Days Season Start
Southern Hemisphere
Autumn/Fall March 21st - Wendesday 358
Winter June 21st - Thursday 450
Spring September 23rd - Sunday 544
Summer December 22nd - Saturday 634
* Local time for Sydney, Aus. Accurate globally within 24 hrs.