Patriots' Day in Mongolia is not a widely recognized or celebrated event, as it is primarily associated with events in the United States, commemorating the battles of Lexington and Concord on the third Monday of April. In Mongolia, national holidays and observances typically reflect the country's own history and cultural heritage.

One significant day in Mongolia is Independence Day (also known as National Pride Day), celebrated on November 26th, which marks Mongolia's independence from China in 1921. On this day, Mongolians honor their history and cultural identity with various activities such as parades, cultural performances, and ceremonies.

Additionally, the Naadam Festival is another pivotal celebration in Mongolia that occurs annually from July 11th to 13th. This festival showcases traditional sports such as wrestling, horse racing, and archery. It's a time when Mongolians pay tribute to their nomadic traditions and ancestors.

While Patriots' Day as understood in the American context doesn't pertain to Mongolian customs or celebrations, Mongolia has its own set of holidays that reflect its patriotism through historical milestones and cultural festivities.