This is the most traditional method, tied to the Earth’s 23.5-degree tilt. Seasons change on the following four key events:
| Season | Northern Hemisphere | Southern Hemisphere | | :--- | :--- | :--- | | | March 1 – May 31 | September 1 – November 30 | | Summer | June 1 – August 31 | December 1 – February 28/29 | | Autumn (Fall) | September 1 – November 30 | March 1 – May 31 | | Winter | December 1 – February 28/29 | June 1 – August 31 | season change dates
For the rest of this post, we will use the , as these are the official first days of the seasons marked on most calendars. This is the most traditional method, tied to
Keep in mind that these dates are approximate and can vary slightly from year to year due to the Earth's elliptical orbit around the Sun. This is the most traditional method