Definition

Noun: A red-letter day is a day that is particularly memorable, happy, or significant. It marks a special occasion or an important event worth celebrating or remembering.

Examples

• We graduated on a true red-letter day for our family.
• The day I got the job offer was a red-letter day in my career.
• For many fans, the championship victory was a red-letter day in the team's history.

Advanced Usage

• The term originates from the practice of printing holidays and saints' days in red ink on ecclesiastical calendars, distinguishing them from ordinary days printed in black.
• It is often used to describe personal milestones (e.g., weddings, graduations) or significant public/historical events.

Variants and Related Words

• Red-letter (adjective): Used to describe the special day itself.
  • It was a red-letter occasion.

Synonyms

• Special day
• Memorable day
• Milestone
• Day to remember
• Notable day

Idioms and Related Phrases

• A day to remember: A very similar idiom emphasizing a memorable day.
  • Our trip to the mountains was a day to remember.
• A banner day: A day marked by notable success or a happy event.
  • It was a banner day for sales at the store.

Noun

1. a memorably happy or noteworthy day (from the custom of marking holy days in red on church calendars)