World Happy First Day of Summer June 20, 2012 prev1 of 9next K.M. Chaudary / APPakistanis jump into a canal to beat the heat in the country's second-largest city, Lahore, Sunday, June 3, 2012. Intense heat gripped parts of Pakistan, sending temperatures as high as 118 degrees Fahrenheit. Share Read Later TIME takes a look at how people across the Northern Hemisphere are getting ready to greet the long, hot days ahead.