Perpetual calendar

A perpetual calendar is a calendar which can be used, theoretically, forever. This silver example was made in Germany in the 18th century.

The calendar is composed of three leaves. This side gives the time of sunrise, time of sunset, length of day, length of night, the zodiacal sign in which the sun is to be found, and the principal Saints' Days.

All the information this pocket instrument could give would have been of interest in a more religious, agricultural society. Today, this type of information is often found in pocket diaries.

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Online ID:	000-100-102-678-C
Image Rights Holder:	National Museums Scotland
Project:	0098: National Museums Scotland Project description \| View all records in project
Ref:	National Museums Scotland T.1926.70
Date:	18th century
Material:	Silver. Inscription: Zodiacal signs; principal Saints' days
Dimensions:	2.38" D
What:	Calendar, perpetual
Subject:	20. TIME MEASUREMENT (Departmental Classification)
Who:
Where:	Germany
Event:
Description:	Silver perpetual calendar composed of three leaves, Germany, 18th century
References:	For the calendar and its importance, see Duncan, D.E., The calendar: the 5000-year struggle to align the clock and the heavens, and what happened to the missing ten days. London: 1998
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