When will fall 2011 start?

Fall in the northern hemisphere in 2011 begins on Friday November 23.

EDIT:

The four seasons are determined by changing sunlight (not heat!)-which is determined by how our planet orbits the Sun and the tilt of its axis.

Seasons of 2011:

SPRING EQUINOX - Sunday, March 20, 7:21 P.M. EDT

SUMMER SOLSTICE - Tuesday, June 21, 1:16 P.M. EDT

FALL EQUINOX - Friday, September 23, 5:05 A.M. EDT

WINTER SOLSTICE - Thursday, December 22, 12:30 A.M. EST

Northern Hemisphere (United States, Canada).

In 2011, fall begins on Friday, September 23rd for countries in the Northern Hemisphere (United States, Canada).

Southern Hemisphere (parts of South America, parts of Africa, Australia, and Antarctica).

In 2011, fall begins on Sunday, March 20th for countries in the Southern Hemisphere (parts of South America, parts of Africa, Australia, and Antarctica).

Guess it depends on where you live.