Explanation:

Haryana Day is observed annually on November 1^st. It is a significant cultural event in the state’s calendar. This day commemorates the historic separation of Haryana from the erstwhile state of Punjab in 1966.

On April 20, 1966, the Indian government established the Shah Commission to review and determine the boundaries of Punjab for the formation of a new state, Haryana.

The commission’s report, submitted on May 30, 1966, led to the implementation of most recommendations except one significant deviation—the designation of Chandigarh as a joint capital shared by both Haryana and Punjab despite recommendations based on linguistic groups.

The name ‘Haryana’ translates to 'the land of God,' reflecting its rich cultural heritage. This separation marked an important milestone in India's history as it created two distinct states with their own unique identities while maintaining shared historical ties through Chandigarh.