Chaitra 1 of the national calendar based on the Saka Era corresponds t

Chaitra 1 of the national calendar based on the Saka Era corresponds to which one of the following dates of the Gregorian calendar in a normal year of 365 days?

22nd March (or 21st March)
15th May (or 16th May)
31st March (or 30th March)
21st April (or 20th April)
This question was previously asked in
UPSC IAS – 2014
The Indian National Calendar, based on the Saka Era, was adopted in 1957. Its civil year starts on Chaitra 1. In a normal year with 365 days, Chaitra 1 of the Saka Calendar falls on the 22nd of March in the Gregorian calendar. In a Gregorian leap year, Chaitra 1 falls on the 21st of March. The option correctly provides both possibilities.
– The Indian National Calendar uses the Saka Era, with the epoch year being 78 CE.
– The calendar was adopted on March 22, 1957 (which was Chaitra 1, 1879 Saka).
– The months follow the tropical zodiac.
– The starting day of the year (Chaitra 1) aligns closely with the vernal equinox.
The Saka Calendar is used alongside the Gregorian calendar in official contexts in India, such as in the Gazette of India, news broadcasts by All India Radio, and calendars issued by the Government of India.