NBC10's Matt DeLucia finds out why we spring ahead for Daylight Saving Time. Believe it or not, it all started in the 1700s with a joking letter from Benjamin Franklin, but wouldn't take hold until more than a century later. Here are the pluses and minuses that play a role in keeping our time changes in place. SUBSCRIBE TO NBC10: VISIT the NBC10 channel for the latest news and exclusive reports: http://on.nbc10.com/jhXM8hP Have a Roku device? Add the free NBC10 app right now for live news updates: http://on.nbc10.com/RrHcMXP FOLLOW NBC10 PHILADELPHIA Instagram: http://on.nbc10.com/ZvgGgo2 Facebook: http://on.nbc10.com/gkeMKi3 Twitter: http://on.nbc10.com/pYka4fl VISIT OUR SITE: https://www.nbc10.com/ DOWNLOAD OUR FREE APPS: http://on.nbc10.com/sEMWgkx ABOUT NBC10 PHILADELPHIA NBC10 is the Philadelphia region's most trusted source for breaking news, exclusive local stories, in-depth investigations and most accurate weather.