Margasirsha Purnima - Thiruvathira, Dathatreya Jayanthi• Vyas Purnima - important day for starting education and honoring teachers• The saying "once in a blue moon" meaning "very rarely" is recorded since the 1820s | , Blackburn, Bonnie; et al |
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Beard 1918 , "Rose Moon", "Thunder Moon"• Phillips, Tony 9 December 2008 | 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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16Guru Purnima - the full moon of the Ashadh month• Shravan Purnima - good day for starting Upanayan day, Avani Avittam, - conceptually also comes on this day | Maddox, Jack 22 September 2010 |
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Phillips, Tony 16 March 2011 | ", 24 August 2009, available at |
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