Calendar
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A calendar is a system of organizing days. This is done by giving names to periods of time, typically days, weeks, months and years. A date is the designation of a single and specific day within such
Modern day Indonesian Gregorian calendar of the Jakarta Cathedral
British calendar, 1851, gilt bronze and malachite, height: 20.3 cm, Metropolitan Museum of Art (New York City)
Equinox seen from the astronomic calendar of Pizzo Vento at Fondachelli Fantina, Sicily
Catalan early 20th century perpetual calendar
Lunisolar calendar
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A lunisolar calendar is a calendar that combines monthly lunar cycles with the solar year. As with all calendars which divide the year into months, there is an additional requirement that the year hav
Calendar
…months) are usually, though not necessarily, synchronized with the cycle of the sun or the moon. The most common type of pre-modern calendar was the lunisolar calendar, a lunar calendar that occasionally adds one intercalary month to remain synchronized with the solar year over the long term. The term calendar is taken…
A page from the Hindu calendar 1871–72
Record of the Chinese 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)
Full Moon 2010