Job Marketplace Browse Salesforce jobs by department or industry, or post an opportunity at your company. Developers Find a Salesforce developer to bring your custom project to life. Product Collections
Most Popular. Thursday, September 22, is the date of the autumn equinox, the first official date of fall. The equinox marks the day when there are exactly 12 hours of sunlight, and marks the changing of the seasons. And with modern day science, we can narrow it down not just to the day, but to the very minute.
For example, under the definition of astronomical seasons, the June solstice marks the start of summer in the Northern Hemisphere, but it is the start of winter in the Southern Hemisphere. The same rule applies for the other seasons. The meteorological seasons in the Southern Hemisphere are also opposite to those in the Northern Hemisphere: 1  Fall (autumn) - starts March 1 and ends May 31; 2  Winter - starts June 1 and ends August 31; 3  Spring - starts September 1 and ends November 30; and, 4  Summer - starts December 1 and ends February 28 (February 29 in a Leap Year).