National Plan for Vacation Day, celebrated on the last Tuesday of January, is a day to encourage Americans to plan their vacation days for the rest of the year at the start of the year. Launched by the U.S. Travel Association’s Project: Time Off initiative in 2017, National Plan for Vacation Day provides an opportunity to come together at a single moment to rally around the importance of planning for a vacation. In its inaugural year, more than 600 organizations, representing all 50 states, came together to encourage Americans to plan for vacation.