The Hebrew calendar, also called the Jewish calendar, is a lunisolar calendar used today for Jewish religious observance and as an official calendar of Israel. It determines the dates of Jewish holidays and other rituals, such as yahrzeits and the schedule of public Torah readings. In Israel, it is used for religious purposes, provides a time frame for agriculture, and is an official calendar for civil holidays alongside the Gregorian calendar.
Jewish calendar, showing Adar II between 1927 and 1948
A shofar made from a ram's horn is traditionally blown in observance of Rosh Hashanah, the beginning of the Jewish civic year.
Calendar for the year 1840/41. Printed by I. Lehrberger u. Comp., Rödelheim. In the collection of the Jewish Museum of Switzerland.
The Trumpeting Place inscription, a stone (2.43×1 m) with Hebrew inscription "To the Trumpeting Place" is believed to be a part of the Second Temple.
A lunisolar calendar is a calendar in many cultures, incorporating lunar calendars and solar calendars. The date of lunisolar calendars therefore indicates both the Moon phase and the time of the solar year, that is the position of the Sun in the Earth's sky. If the sidereal year is used instead of the solar year, then the calendar will predict the constellation near which the full moon may occur. As with all calendars which divide the year into months there is an additional requirement that the year have a whole number of months. In some case ordinary years consist of twelve months but every second or third year is an embolismic year, which adds a thirteenth intercalary, embolismic, or leap month.
Record of the Chinese lunisolar calendar for 1834, 1835, and 1836 during the Qing dynasty under the Daoguang Emperor's Reign (道光十四年,道光十五年,道光十六年)
1729 Japanese calendar, which used the Jōkyō calendar procedure, published by Ise Grand Shrine