April 9th is Equal Pay Day, a chance to acknowledge the persistent income gap between men and women and to commit to doing something to close it. Each year, Equal Pay Day is celebrated on the date that marks how much longer a woman must work to earn the same pay a man earned, on average, during the previous year. In 2012, women in the U.S. would have had to work 15 months and nine days to receive a paycheck equal to what men doing the same job received in just 12 months.