Sunday November 27, 2022

2021 Seasons Calendar


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 2020 for both the northern and southern hemispheres.

Change Year:

Season Date # Days Season Start
Northern Hemisphere
Spring 2021 March 20th - Saturday -617
Summer 2021 June 20th - Sunday -525
Autumn/Fall 2021 September 22nd - Wednesday -431
Winter 2021 December 21st - Tuesday -341
* Local time for Denver, CO. Accurate globally within 24 hrs.

Season Date # Days Season Start
Southern Hemisphere
Autumn/Fall 2021 March 20th - Saturday -617
Winter 2021 June 21st - Monday -524
Spring 2021 September 23rd - Thursday -430
Summer 2021 December 22nd - Wednesday -340
* Local time for Sydney, Aus. Accurate globally within 24 hrs.




Holiday Dates for the Year

Provides the dates for holidays for the calendar year.


Yearly Calendars

Provides calendars for the calendar year.