Gregorian calendar posters & prints

Discussion of the Reform of the Calendar under Pope Gregory XIII replaced by the Gregorian Calendar, Rome, 15 October 1582 Italian School

The Peter I edict on the introduction of the Julian calendar in Russia, 1699 Anonymous

Calendar of Jacob Daniel Bruce, 1709, Mid of the 19th cen Anonymous

Moveable disc calendar Anonymous

An Election Entertainment, 1755 William Hogarth

Zodiac Calendar Battista Agnese

Calender, 1601-50 German School

Mapamundi. Calendar Anonymous

Zodiacal calendar Alphonse Mucha

Republican calendar, 22nd September 1793 Francois Maria Isidore Queverdo

Calendar for Year 23 of the Reign of Emperor Guang Xu 1897 School Chinese

Liber Astrologiae Anonymous

Liber Astrologiae Anonymous

The Gregorian telescope, 1736-1748 Claude Paris

The Antikythera mechanism, 205 BC Historic Object

Round Illus. Calendar Of Sun & Venus Anonymous

An astrological chart, 1646 Athanasius Kircher

Republican calendar, 1794 French School

Prodromus astronomiae, 1690 Johannes Hevelius

June Anonymous

James Gregory, 17th century Scottish mathematician and astronomer Unknown

Persian Calendar Showing Zodiac Signs Anonymous

Saxon Calendar Anonymous

Egyptian Calendar with Zodiac Signs Anonymous

Friday the 13th Page on Desk Calendar Anonymous

Printed Book of Hours: fol. 10v, September calendar illustration, 1510 Guillaume Le Rouge

Nivose, fourth month of the Republican Calendar Louis (after) Lafitte

St Paul's Cathedral, City of London William Monk