EXAMPLES FROM THE WEB FOR RED-LETTER
This may be termed the red-letter year of the Canadian post-office.
That will make it another kind of red-letter day—S for S'prise.
Phœbe's graduation from the Greenwald High School was her red-letter day.
However that may be, certain it is that this is a red-letter night at the Mermaid.
The girl came to count that a red-letter day on which she did not see her mistress.
"I assure you that for me this is a red-letter day," I added.
To Toni, spending her life in dingy Brixton, this afternoon was a red-letter day.
I used to live on his letters, and the day when he came home was a red-letter day.'
He was ravenous for the sweets that only on red-letter days he had ever tasted in his life.
The 16th of November was a red-letter day, for on it we crossed the last sand-ridge—in lat.