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Astronomy in India — Syllabus

CBSE · Class 11 · Knowledge Traditions and Practices of India

What Astronomy in India covers in CBSE Class 11 Knowledge Traditions and Practices of India: 4 topics, for the 2026-27 session.

126 questions82 flashcards7 formulas & key relations5 concepts

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4 Topics · CBSE Class 11 Knowledge Traditions and Practices of India · 2026-27

Topics in Astronomy in India

1

Indian calendar and timekeeping

  • The Hindu calendar is a luni-solar calendar.
  • A lunar month is used for festivals and auspicious days, while a solar month is used for daily life.
  • The sidereal period of the Moon is 27.3 days.
2

Explanation of eclipses and related ideas

  • Solar eclipse occurs when the Moon is between the Earth and the Sun.
  • Lunar eclipse occurs when the Earth is between the Moon and the Sun.
  • Eclipses occur only on full moon or new moon days.
3

Uttarāyaṇa, Dakṣiṇāyana, and seasonal change

  • The duration of sunlight in a day changes throughout the year.
  • Longer sunlight hours coincide with summer, and shorter sunlight periods occur in winter.
  • The position of sunrise shifts towards the north, then south, and then north again in a yearly cycle.
4

Ancient Indian astronomers and mathematicians

  • Āryabhaṭṭa was born in 476 C.E. near modern Patna.
  • Āryabhaṭṭa wrote Āryabhaṭīyam at age 23.
  • Āryabhaṭṭa introduced the concept of the celestial sphere, large number units, week days, and the adhikamāsa scheme.

Key Concepts

Central concept: Astronomy in India

Ancient Indian astronomyIndian calendarMoon and lunar motionSun and solar motionEclipsesImportant astronomersMathematical support for astronomyKerala School of Astronomy

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Frequently Asked Questions

What are the important topics in Astronomy in India for CBSE Class 11 Knowledge Traditions and Practices of India?
Key topics in Astronomy in India include Indian calendar and timekeeping, Explanation of eclipses and related ideas, Uttarāyaṇa, Dakṣiṇāyana, and seasonal change, Ancient Indian astronomers and mathematicians. Study these first, then practise questions on each for Class 11 exams.
How should I revise Astronomy in India for Class 11 exams?
Learn the core ideas first, then work through the 126 practice questions on Astronomy in India. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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