red letter day

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red letter day

Where it comes from

An allusion to the practice, dating to classical antiquity, of marking important days in red on calendars.

noun red letter days · red-letter day

  1. A day marked in red on calendars; a church feast day. The only red-letter day occurring in July, is the twenty-fifth, called St James's Day.
  2. idiomatic A particularly significant day; a day of personal or sectarian celebration. Monday was a red letter day for her. She accomplished a lot and had fun doing it.

    Similar: day of days, red letter date

Translations

Every language

noun day of special significance

中文大日子 dàrìzǐ, 里程碑 lǐchéngbēi
Русскийпа́мятный день pámjatnyj denʹ, пра́здник prázdnik

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MLA

"red letter day." Wiktionary, via Micwyn, micwyn.com/word/red%20letter%20day. Accessed 7 Nov. 2026.

APA

red letter day. (n.d.). In Wiktionary, via Micwyn. Retrieved November 7, 2026, from https://micwyn.com/word/red%20letter%20day

Chicago

"red letter day." Wiktionary, via Micwyn. Accessed November 7, 2026. https://micwyn.com/word/red%20letter%20day.

BibTeX
@misc{red_letter_day_2026,
  title = {red letter day},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/red%20letter%20day},
  urldate = {2026-11-07}
}