Why Navratri and Durga Puja Come Twice a Year

Navratri is kept twice because the nine nights are tied to two different lunar months, not because one festival was copied onto a second date by accident. Vasanta Navratri begins on Chaitra Shukla Pratipada. Sharad Navratri begins on Ashwin Shukla Pratipada. Each runs through Navami, nine tithis of the bright half. Chaitra Pratipada is also the lunar new year in several regional calendars. Ashwin's bright fortnight is the one that grows into public Durga Puja, especially in Bengal, where the main days gather around Shashthi, Saptami, Ashtami, Navami, and Vijaya Dashami. A civil date from a past year does not define either start. The panchang of that year does.

Across those nine tithis the Navadurga are worshipped in order: Shailputri, Brahmacharini, Chandraghanta, Kushmanda, Skandamata, Katyayani, Kaalratri, Mahagauri, and Siddhidatri. The order follows the tithi, from Pratipada to Navami. It does not follow a color chart printed for one season. Color lists change by region and by year, so they are not the classical spine of the festival. The text behind the recitation is the Durga Saptashati, the Devi Mahatmya, whose three charitas tell the battles with Madhu and Kaitabha, with Mahishasura, and with Shumbha and Nishumbha. Homes that cannot recite all 700 verses still keep the nine days. The tithi count remains the same.

Keeping Navratri is a dharma practice linked with the Devi. In a birth chart the 9th house is dharma, teachers, and worship, and the 12th is moksha and what is offered up. Those houses do not start on Ashwin Pratipada for every native, and they do not move because a city has a pandal. Someone born under a strong 9th lord may feel the festival as part of life. Someone else may keep it as family custom with a quiet 9th. Neither fact is a prediction of luck for a rashi during those nine days. The festival dates are lunar. Personal timing, if it is asked, is still the Vimshottari dasha already running.