World's largest hot desert. Located in north Africa and covers over 3,500,000 square miles (9,000,000 sq km) or roughly 10% of the continent. Mean temperature over 30 degrees C. Variations may also be huge, from over 50 degrees C during the day, to temperatures below 0 at night in summer.
Fall begins (Northern H.) History. Fall begins in the Northern Hemisphere when the Sun is perpendicular to the equator. This day has equal hours of day and night. The first day of Fall is also called the Autumnal Equinox. In many areas it coincides with harvests. The first day of Fall happens between each year between September 22 and 24.
First Day of Fall 2016. Get the date and time of the beginning of fall equinox and first day of fall 2016. The start of the fall season is observed in September in Northern Hemisphere. As the summer gets close towards month of August, many of you will be searching to know when the first day of autumn in year 2016 is.