The Senate on Tuesday unanimously passed a bill to make Daylight Saving Time permanent. If it passes through the House, Americans would no longer change their clocks twice a year. The Sunshine Protection Act, introduced by Sen. Marco Rubio (R-Fla.) but co-sponsored by a bipartisan group of lawmakers, seeks to bring the entire country in line with states like Florida which have already voted to end Standard Time, which runs from November to March.