red letter day

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See also: red-letter day


Alternative forms[edit]


From the practice of marking feast-days in red on church calendars.


red letter day (plural red letter days)

  1. (idiomatic) A particularly significant day or a day to celebrate (personal or sectarian).
    Monday was a red letter day for her. She accomplished a lot and had fun doing it.
    We saw losses for days in a row, but Black Tuesday was the worst red letter day of them all.
    • 1975, John Ankenbruck, Twentieth Century History of Fort Wayne - Page 286
      "In the meantime, the St. Valentine's Day Massacre at Chicago was a red-letter day in the gangster wars."

Usage notes[edit]

  • Usually used to refer to a notably positive, favorable occasion, but sometimes used with a negative sense.