On March 30 of 1949 the four princely states - Jaipur, Jodhpur, Bikaner, and Jaisalmer - joined hands to form Greater Rajasthan.
This year, state govt has announced a calendar shift and Rajasthan Day will now be celebrated annually on Chaitra Shukla Pratipada, the first day of the Hindu calendar.
In 2025, that falls on March 30 but in future years, the date will vary.
In 2026, for example, Chaitra Pratipada will fall on March 19.