The months in the first half of the year all average out to having 31 days, to take into account the slower movement of the sun across the ecliptic at this time.
[5] Senior Indian Astrophysicist Meghnad Saha was the head of the Calendar Reform Committee under the aegis of the Council of Scientific and Industrial Research.
The task before the committee was to prepare an accurate calendar based on scientific study, which could be adopted uniformly throughout India.
India's first prime minister, Jawaharlal Nehru, in his preface to the Report of the committee, published in 1955, wrote: Usage started officially on 1 Chaitra 1879 Saka Era, or 22 March 1957.
However, despite the government's attempts to propagate the calendar through official Rashtriya Panchangs, the Indian national calendar did not find acceptance with panchang makers or the general public, and current usage is largely limited to governmental offices.