a calendar devised to be used for many years, as in determining the day of the week on which a given date falls.
a desk calendar with months, days, and dates that can be changed, as by adjusting various dials, so that it may be used over and over for many years.
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What does “blatherskite” mean?
Origin of perpetual calendar
First recorded in 1890–95
Words nearby perpetual calendar
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020