The search query is an interrogative clause where the core subject is the proper noun "Patriots' Day". The function of the phrase is to request a specific piece of informationa datefor the current calendar year. For this year, 2024, Patriots' Day is observed in Massachusetts on Monday, April 15.
The date of this holiday is determined by state law in Massachusetts and Maine, which designates its observance on the third Monday in April. Unlike holidays with fixed calendar dates, its position shifts annually. This floating nature means the specific date must be calculated each year. For instance, in 2025, the third Monday of April will be April 21.
This scheduling is significant as it directly impacts major cultural and civic events. The Boston Marathon, a world-renowned athletic event, is traditionally held on this day. The date also sets the schedule for historical reenactments of the Battles of Lexington and Concord, parades, and other commemorative activities that mark the beginning of the American Revolutionary War.