Recurrence pattern: every year on November 26.

Republic Day in Mongolia is observed every November 26, commemorating the establishment of the Mongolian People's Republic on this date in 1924. The holiday marks a significant historical moment, as Mongolia declared independence from China in 1911 and again in 1921, leading to a close alignment with the Soviet Union. The celebrations reflect the nation's journey towards sovereignty, following years of foreign occupation and influence. While the source does not specify particular customs or activities associated with the holiday, it is a day of national pride for the Mongolian people, reflecting on their history and independence.