Jewish–Gregorian Calendar

Date: 06/2010 – 10/2010

Location: Old Synagogoue, Essen

Client: City of Essen

The Old Synagogue reopened as a house of Jewish culture with a new look in 2010. One special attraction is the Jewish–Gregorian calendar, which takes the shape of a large, mechanically operated machine to convert Jewish dates to their corresponding dates in the Gregorian calendar in an impressive way. Each calendar is depicted on a large cog over three metres in diameter.

By turning the winding handle, the two large cogs are set in motion. At the place where the cogs meet, a magnifying glass shows the dates from the two different calendars.

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