Many Blue Moons

Author: A.R. Peters,


  1. James Hugh Pruett: "Once in a Blue Moon". Sky&Telescope V(5), March 1946, pp.3..4
  2. Michael Quinion: "Blue Moon".
  3. Roger W. Sinnott, Donald W. Olson, and Richard Tresch Fienberg: "What's a Blue Moon?" Sky&Telescope, May 1999, pp.36..38 .
  4. Farmers´Almanac: What is a “Blue Moon”? (now defunct)
  5. C. Philippe E. Nothaft: "The Astronomical Data in the Très Riches Heures and their Fourteenth-Century Source". J.Hist.Astron. 46(2), 1 May 2015, pp.113..129 .
  6. Emily Upton: The Origin of the Phrase: "Once in a Blue Moon".
  7. Is the blue in blue moon a reference to betrayal?