perpetual calendar

Definition of Perpetual Calendar in English :

1. perpetual calendar

a chart or mechanical device that indicates the days of the week corresponding to any given date over a long period of years

WordNet Lexical Database for English. Princeton University. 2010.

Perpetual Calendar

1.

a calendar mathematically arranged so that the correct day of the week can be determined for any given date over a wide range of years

2.

a desk calendar adjustable for each of many years

n.

A chart or mechanical device that indicates the day of the week corresponding to any given date over a period of many years.