Do people in india perform any religious ceremonies?

Religion in India is characterised by a diversity of religious beliefs and practices. India is a secular state with no state religion. The Indian subcontinent is the birthplace of four of the world's major religions; namely Hinduism, Buddhism, Jainism, and Sikhism. According to the 2011 census, 79.8% of the population of India practices Hinduism, 14.2% adheres to Islam, 2.3% adheres to Christianity, and 1.7% adheres to Sikhism. Zoroastrianism and Judaism also have an ancient history in India, and each has several thousands of Indian adherents. India has the largest population of people adhering to Zoroastrianism (i. e. Parsis and Iranis) and Bahá'í Faith in the world,[1] even though these religions are not native to India. Many other world religions also have a relationship with Indian spirituality, such as the Baha'i faith which recognises the Buddha and Krishna as manifestations of the God Almighty.[2] Throughout India's history, religion has been an important part of the country's culture. Religious diversity and religious tolerance are both established in the country by the law and custom; the Constitution of India has declared the right to freedom of religion to be a fundamental right.[3]

Wikipedia

Yes they do many!