Seasons

Northern Hemisphere

Spring: March 1 to May 31
Summer: June 1 to August 31
Autumn: September 1 to November 30
Winter: December 1 to February 28

Southern Hemisphere

Spring: September 1 to November 30
Summer: December 1 to February 28
Autumn: March 1 to May 31
Winter: June 1 to August 31

Northern Hemisphere

Spring: March 21 to June 20
Summer: June 21 to September 20
Autumn: September 21 to December 20
Winter: December 21 to March 20

Southern Hemisphere

Spring: September 21 to December 20
Summer: December 21 to March 20
Autumn: March 21 to June 20
Winter: June 21 to September 20