Introduction

General information

• diameter: 9.5 cm,
• made of solid brass
• hardwood display stand included
• instrument is fully functional
• information booklet included
• packed in elegant box

Additional information

Do you want to check what day of the week you were born on?

Do you want to recall what day of the week you passed your driving license on?

Or maybe you would like to look into the future and check exactly on what day of the week something you are waiting for is going to happen ?

Whatever date you are going to check you will do it quickly with our perpetual calendar.

Only perpetual calendars meet the basic condition to permit the deduction of any essential data from any other data (year, month, week and day). However, all the analog perpetual calendars known are hardly perpetual since the limit of their calculations is about 50 years.

Our calendar starts at January 1, 1600, and ends at December 31, 2799. It is based on a repeating cycle of 400 years and a solar cycle of 28 years.