The Sultan of Terengganu Coronation Anniversary is observed in Terengganu, Malaysia, every March 4. This day commemorates the coronation of Sultan Mizan Zainal Abidin, who became the Sultan in 1999 following the death of his father, Sultan Mahmud Al-Muktafi Billah Shah. The celebration marks the historical significance of the sultanate, which became independent in 1724 and has a rich history of political influence and changes in sovereignty, including periods under the Rattanakosin Kingdom of Thailand and British protection. As a constitutional monarch, the Sultan serves as the head of state, and the anniversary is recognized as an official holiday in Terengganu, allowing citizens to celebrate their royal heritage and the role of the Sultan in state governance.