Our National Calender is

Correct option is D

The correct answer is National Saka.
National Saka:
· The Saka Era is believed to be founded by King Shalivanhana of the Shatavahana dynasty.
· The Saka calendar consists of 365 days and 12 months, which is similar to the structure of the Gregorian Calendar.
· Our national calendar is based on the Saka calendar.
· The first month of the Saka calendar is Chaitra, which corresponds to March 22 of the Gregorian calendar.
· The Saka calendar began in 78 CAD.
· This means, for example, if it's 2022 by the Gregorian calendar, in the Saka calendar the year will be 1944.
Thus, our national calendar is national saka.
Information Booster
· National integration is essential for any nation with socio-cultural, religious, linguistic, and geographical diversities.
· National Symbols like the National Flag, the National Anthem, and the National Emblem help to remind us that we all have one identity.
· The national calendar is also one of the national symbols.
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Additional Information
Jana Gana Mana:
· It is the national anthem of India.
· It was composed by Rabindranath Tagore and was first sung at the 1911 convention of the Indian National Congress.
· The Jana Gana Mana was declared India’s National Anthem on 24th January 1950.
Vande Matram:
· It is the national song of India.
· It was composed by Bankim Chandra Chattopadhyaya.
· On 24 January 1950, the Constituent Assembly of India adopted “Vande Mataram” as a national song.