Lifehacker
Psychologist and mathematician Cliff Arnall calculates that today, June 20th, is the happiest day of the year. His formula, which takes into account outdoor activity, socializing, weather, and the expectation of a holiday, identifies the most depressing day of the year around the end of January. [via]
Happy Happiest Day of the Year
12:00 PM on Fri Jun 20 2008
By Gina Trapani
6,504 views
