Autumn
76 series first aired in September, October or November, the classic start of the television year. Friends began on 22 September 1994.
Winter
27 series began in December, January or February, including Schitt's Creek and Derry Girls.
Spring
31 series began in March, April or May: Grey's Anatomy started on 27 March 2005.
Summer
31 series began in June, July or August, such as The Newsroom and Warehouse 13.
