Cinco De Mayo is celebrated every year on May 5  to commemorate the victory of the Mexicans over the French in the Battle of Puebla during the Franco-Mexican War in 1862. The term 'Cinco De Mayo' is a Spanish phrase that translates to "the fifth of May".

National Golf Day is celebrated annually on May 10th. It's a day to celebrate the sport of golf.

Mother's Day for celebrating mothers and showering them with gifts and treats.

All Navajo Transit System Offices and Transportation Facilities will be closed in observance of this Holiday.