Qatar National Day is celebrated annually on December 18th to commemorate the day in 1878 when Sheikh Jassim bin Mohammed Al Thani succeeded his father, Sheikh Mohammed bin Thani, as the ruler of Qatar. This day marks the beginning of the Al Thani family's rule and symbolizes the nation's unity and independence. The celebration includes various events such as parades, fireworks, and cultural performances that showcase Qatari heritage. Citizens and residents participate in activities that reflect national pride, including displaying the Qatari flag and wearing traditional attire.