Word.ws English Dictionary

Tau Day

Tau Day proper noun: june 28th, an annual celebration of the mathematical constant 𝜏 (tau).

Proper noun

Tau Day

  1. June 28th, an annual celebration of the mathematical constant 𝜏 (tau).
    • But all isn’t lost for those looking for a fun day to celebrate math: Tau Day (6/28, or June 28th) is today!2019 June 28, Chaim Gartenberg, Tau Day is here: celebrate tau, not pi, as the true circle
    • So here's to June 28th β€” Tau Day.2018 March 14, Emily Conover, Forget Pi Day. We should be celebrating Tau Day

Origin of Tau Day

By analogy with Pi Day, with 𝜏 (tau) being equivalent to 2Ο€ (6.28...)

Questions about Tau Day

What does Tau Day mean?
Tau Day means june 28th, an annual celebration of the mathematical constant 𝜏 (tau).
What part of speech is Tau Day?
Tau Day is a proper noun.

Words near Tau Day in the dictionary

  1. Tau Ceti
  2. Tau Cetian
  3. Tau Cetians
  4. tau cross
  5. tau crosses
  6. Tau Day
  7. tau effect
  8. tau effects
  9. tau huay
  10. tau kua pau
  11. tau lepton

Source and license

Adapted from Wiktionary: Tau Day (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

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