red-letter

American  

[red-let-er] / ˈrɛdˈlɛt ər /

adjective

1. marked by red letters, as festival days in the church calendar.

2. memorable; especially important or happy.

   a red-letter day in his life.

3. (of a Bible) having the quoted words of Jesus appear in red type.

   a red-letter edition;

   the red-letter New Testament presented at her baptism.

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Etymology

Origin of red-letter

First recorded in 1660–70

Example Sentences

But it had been a red-letter day anyhow, the main day of the year for me, better than the 4th of July.

From Literature

This was a red-letter day for Adelaide-born Head as he scored a stunning century in front of a packed crowd on familiar territory.

From BBC

This was a red-letter day in the history of Liverpool's famous old stadium as the new top deck of the Anfield Road Stand was in use for the first time.

From BBC

His 24 points - his highest tally in a Test match - included two tries, but his kicking, vision and communicative skills laid the foundation for Ireland's red-letter day.

From BBC

Saturday was a red-letter day for the history of art in Southern California.

From Los Angeles Times