Sikkim State Day is a state holiday for the northeastern state of Sikkim. This year, the holiday will be celebrated on 16 May 2026, Saturday. This day is celebrated to commemorate Sikkim becoming the 22nd state of India.

The Namgyal dynasty formed the Kingdom of Sikkim in the seventeenth century. It was governed by the Chogyal monarchy, which was composed of Buddhist priest-kings. In British India, Sikkim became a principality in 1890. Sikkim maintained its protectorate status inside the Republic of India when both India and Pakistan gained their independence in 1947.
The Sikkimese monarchy was overthrown by the Indian military in 1975 as a result of mounting unrest against the Chogyal's rule and a direct demand for Indian assistance by the Sikkimese prime minister. Following a voting process in which 97.5% of participants favored ending the monarchy, Sikkim became the 22nd state of India.
Sikkim, which is nestled among the Himalayas, is the second-smallest and least populous of all the Indian states. Sikkim is home to Kangchenjunga, the third-highest peak in the world and the highest mountain in India.
Sikkim Day will be celebrated on 16 May 2026, Saturday.
Sikkim Day is celebrated as Sikkim became a part of India in 1975 and the 22nd state of India. It also marks the end of the king’s rule in Sikkim.
Yes, there is a public holiday in the state, Sikkim. Government offices, schools, and many shops remain closed, and people celebrate the day with simple programs and events.
Before 1975, Sikkim was a kingdom which was ruled by the Namgyal dynasty.
Sikkim became a state through the 36th Constitutional Amendment Act, 1975.

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