{{Infobox month | image = | alt = | caption = | native_name = {{lang|ta|Aippasi}} | calendar = Tamil calendar | num = 7 | days = 29 or 30 | season = Kulir (autumn) | gregorian = October–November | holidays = {{ubl |Deepavali}} | prev_month = Purattasi | next_month = Karthigai }} '''Aipasi''' is the seventh month of the Tamil calendar.<ref>{{cite web |url=https://www.timeanddate.com/calendar/tamil-calendar.html|title=Tamil Calendar – Months |work=Time and Date |access-date=1 October 2025}}</ref> The name of the month is derived from the position of the Moon near the Ashvini nakshatra (star) on the pournami (full moon) day.<ref>{{cite book|title=Heavens and Earth: The Story of Astrology Through Ages and Cultures|author=Garima Garg|year=2022|isbn=978-9-354-92705-8|publisher=Penguin Random House|page=75}}</ref> The month corresponds to kulir kaalam (autumn season) and falls in October–November in the Gregorian calendar.<ref>{{cite book|title=The Circle of Six Seasons|author=Martha Ann Selby|year=2003|isbn=978-0-141-00772-4|page=xxix}}</ref><ref name="Siddhantha">{{cite book|title=The Siddhantas and the Indian Calendar|author1=Robert Sewell|author2=John Faithful Fleet|year=1989|publisher=Asian Educational Services|page=334}}</ref>
In the Hindu lunar calendar, it corresponds to the seventh month of Ashvin, falling in the Gregorian months of September–October.<ref name="Siddhantha"/>
In the Hindu solar calendar, it corresponds to the seventh month of Tula and begins with the Sun's entry into Libra.<ref>{{cite web|url=https://www.hindunet.org/home/interfaith_relations/hirani/hindu_panchang.htm |title=Hindu Panchang|work=Hindu Net|access-date=1 October 2025}}</ref>
In the Vaishnav calendar, it corresponds to the seventh month of Padmanabha.<ref>{{cite web |url=https://www.vaisnavacalendar.info/aboutcalendar.htm|title=Vaisnava Calendar Reminder Services – About Calendar |work=Vaisnava Calendar |access-date=1 October 2025}}</ref><ref>{{cite web |url=https://www.isvara.org/archive/on-the-calendar-by-srila-prabhupada/ |title=Something about the Vaisnava Calendar |work=ISVARA |access-date=1 October 2025}}</ref>
== Festivals == Deepavali is a Hindu festival of lights marking the victory of light over darkness, or good over evil.<ref>{{cite web |title=Deepavali |url=https://www.itslife.in/festivals/deepavali|work=Its Life |access-date=1 June 2025}}</ref><ref>{{cite book |last=Mead |first=Jean |url=https://books.google.com/books?id=QJyZKOtHWg4C&dq=deepavali+hinduism&pg=PA5 |title=How and why Do Hindus Celebrate Divali? |date=February 2008 |publisher=Evans Brothers |isbn=978-0-237-53412-7 |access-date=5 August 2022 |archive-url=https://web.archive.org/web/20231111150755/https://books.google.com/books?id=QJyZKOtHWg4C&dq=deepavali+hinduism&pg=PA5#v=onepage&q=deepavali%20hinduism&f=false |archive-date=11 November 2023 |url-status=live}}</ref><ref>{{cite book |last1=Vasudha Narayanan |url=https://books.google.com/books?id=rdTJJEQsDHoC&pg=PA31 |title=Celebrate Diwali |last2=Deborah Heiligman |publisher=National Geographic Society |year=2008 |isbn=978-1-4263-0291-6 |page=31 |access-date=14 October 2016 |archive-url=https://web.archive.org/web/20170102023011/https://books.google.com/books?id=rdTJJEQsDHoC&pg=PA31 |archive-date=2 January 2017 |url-status=live}}</ref> It is celebrated on the amavasya (new moon. It is dedicated to welcoming prosperity by worshipping goddess Lakshmi, the Hindu goddess of wealth. People light lamps (diyas), burst crackers, and do pujas.<ref>{{cite web |title=Happy Diwali: Deepavali, Kali Puja, Naraka Chaturdasi, Ramayana, The Legends Linked To Diwali |url=https://www.ndtv.com/india-news/happy-diwali-deepavali-kali-puja-naraka-chaturdasi-ramayana-legends-linked-to-diwali-2120984|work=NDTV |access-date=1 June 2025}}</ref>
==See also== {{Portal|Hinduism}} * Astronomical basis of the Hindu calendar * Hindu astronomy
==References== {{Reflist}}
{{Tamil calendar}}
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