March 31, 2025 isn’t a federal vacation in america. It’s a Monday and most companies, colleges, and authorities places of work will likely be open.
Nevertheless, some states and localities might observe March 31 as a vacation. For instance, within the state of Hawaii, March 31 is called Kamehameha Day and is a state vacation. Kamehameha Day commemorates the delivery of Kamehameha I, the founder and first king of the Kingdom of Hawaii.