India's national calendar is based on�
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Saka Era
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Christian Era
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Budhist Era
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Vedic Era
A
Correct answer
Explanation
India's national calendar, the Saka Calendar, is based on the Saka Era. It was officially adopted in March 1957 and began with Saka Era 1879. The calendar runs from Chaitra (March-April) to Phalguna. The Christian Era (Gregorian calendar) is used alongside it for official purposes. Buddhist and Vedic Eras are different chronological systems.