Pioneer Day is an official holiday, settled by Mormon pioneers. The event is celebrated on the 24th of July in Utah and surrounding states. It commemorates the day of the entry of Brigham Young and the first group of Mormon pioneers into the Salt Lake Valley in 1847. But it also has strong links with the holiday in the LDS Church (The Church of Jesus Christ of Latter-day Saints). The celebrations include reenactments of the pioneers' entry into the Salt Lake Valley, parades, concerts, festivals, rodeos, and fireworks. On this day most governmental offices and many businesses are closed.