Tom thought a good deal about Rosamund during the week, and regarded Sunday as the red-letter day of his calendar.
But I must hurry on to the red-letter day of my life, the 20th of May.
January 24, 1848, was the red-letter day in California's history, and the news that transpired that day electrified the world.
The day of days, yes, the red-letter day, is "Promotion Sunday."
Further preparations were made for the red-letter day, and a baseball game added to the program.
Sheep-shearing day continued the red-letter day on Nantucket well into the present century.
The red-letter day, since such it deservedly is, on which this universal melodist first saw the light was the 10th October 1813.
A special or memorable day; the expression refers to the old custom of printing holidays in red on calendars: “John got promoted and engaged to be married yesterday; it was truly a red-letter day for him.”
An important day; a memorably happy or noteworthy day: red-letter days marked on the calendar