Ben Franklin did not invent Daylight Saving Time (he didn’t want the turkey for the National Bird either). DST began in Europe and the US during WWI. People (in particular farmers) hated it and it was done away with in the US in 1919. DST was never instituted to help farmers.
Daylight Saving Time was brought back in WWII as a way to save electricity. It went year ’round throughout the war and was called War-Time.
In 1966 Congress made DST uniform across the country. There were tweaks in 1986 and 2005. It now begins the second Sunday in March and ends the first Sunday in November which is today. So if you haven’t set your clocks back an hour do it now. You wouldn’t want to miss the first hour of the Redskins game at 4:00 pm.