Calendar for the Year 5665, an Intercalated Year
Ezra Dangur
1904
Image

The Hebrew calendar uses a system of intercalation, adding an additional month to the calendar year to synchronize the regular twelve-month calendar with the moon, sun, and seasons. The Hebrew calendar has seven leap years with intercalated months in each nineteen-year cycle. This is the title page of a calendar, published in Baghdad by the press of Ezra Dangur, which describes the Hebrew year 5665, indicating its length and adjustments for weekly Torah readings as well as how it correlates to other calendar systems.
Credits
Ezra Dangur, Taḥel shanah u-virkhotehah: Seder ‘ibur 1904/05
meuberet (Baghdad: Ezra Dangur, 1904).
Published in: The Posen Library of Jewish Culture and Civilization, vol. 7.