| Guru Purnima - the full moon of the Ashadh month• "Wolf Moon" is attributed to the Algonquin by Haddock 1992 ; the actual Algonquin name for that moon is squochee kesos or "sun has not strength to thaw" | see James Ferguson, Astronomy explained upon Sir Isaac Newton's principles,: and made easy to those who have not studied mathematics, 1756, |
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| Bhadrapad Purnima - start of Pitrupaksha, Madhu Purnima• Farmers' Almanac, "What is a blue moon? Pushya Purnima - Thaipusam, Shakambharee Purnima• Phillips, Tony 9 December 2008 | Beard 1918 , "Rose Moon", "Thunder Moon"• Vyas Purnima - important day for starting education and honoring teachers• Margasirsha Purnima - Thiruvathira, Dathatreya Jayanthi• The saying "once in a blue moon" meaning "very rarely" is recorded since the 1820s |
| Maddox, Jack 22 September 2010 | , Blackburn, Bonnie; et al |
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| Phillips, Tony 16 March 2011 | Shravan Purnima - good day for starting Upanayan day, Avani Avittam, - conceptually also comes on this day |