NATIONAL calendar BASED on the Saka Era, with Chaitra as its first month and a normal year of 365 days.It was adopted from 22 March 1957 along with the Gregorian calendar for the following official purposes:Gazette of India.News broadcast by All India Radio.Calendars issued by the Government of India.Government communications addressed to the members of the public. The Vikrama era (58 BC) is said in the Jain BOOK Kālakācāryakathā to have been founded after a VICTORY of King Vikramāditya over the Śaka.The Saka era was started by KANISHKA I from 78 CE.The Hijri year started fro 622 AD.