Multiple choice The National calendar of India is based on the ________ era. Chaitra Dharma Saka Shastra Reveal answer Fill a bubble to check yourself C Correct answer Explanation The Saka Era is the basis of India's national calendar, which was officially adopted in 1957. The calendar starts from 78 AD, marking the accession of the Saka king. It is used alongside the Gregorian calendar for official government purposes.