calendar system

Also known as Calendar, calendar

thumb|Modern day Indonesian [[Gregorian calendar for a Catholic church]] thumb|British calendar, 1851, gilt bronze and malachite, height: 20.3 cm, [[Metropolitan Museum of Art (New York City)]]

AI overview

A calendar system is a method of organizing and measuring time by dividing it into units like days, months, and years. Calendar systems matter because they allow people to coordinate activities, plan ahead, and keep track of important dates and events in a standardized way.

AI-generated from the Wikipedia summary — may contain errors.

Research

3,426 papers

Methodology Considerations.Journal of allied health · 2025Elwood TW
[Unusual Migraine Manifestations].ReviewPraxis · 2016Schipper S, Gantenbein AR, Sandor PSDOI: 10.1024/1661-8157/a002370
Whither the challenge hypothesis?ReviewHormones and behavior · 2020Wingfield JC, Ramenofsky M, Hegner RE et al.DOI: 10.1016/j.yhbeh.2019.104588
Insect photoperiodic calendar and circadian clock: independence, cooperation, or unity?ReviewJournal of insect physiology · 2011Koštál VDOI: 10.1016/j.jinsphys.2010.10.006
Perceptions of chemotherapy calendar creation among US pediatric oncologists.Pediatric blood & cancer · 2023Mueller EL, Cochrane AR, Carroll AEDOI: 10.1002/pbc.30688
Review: the Rh blood group system: an historical calendar.Immunohematology · 2005Issitt PD
Zodiakale und planetare Dekane.Berichte zur Wissenschaftsgeschichte · 2016Hübner WDOI: 10.1002/bewi.201601761
Memory Support System in French: a Pilot Study.Canadian geriatrics journal : CGJ · 2024Santos OA, Fievre J, Sweet L et al.DOI: 10.5770/cgj.27.723

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Wikidata facts

Image: Revolution kalendar.jpg

Show 5 more facts

Commons category: Calendars
Unicode character: 🗓
Commons gallery: Calendar
P8168: Zoran Baldovaliev
P13411: Alto Biobío

Sources (1)

wikidata.org

via Wikidata · CC0

~22 min read

Article

23 sections

Contents

Etymology
History
Systems
Solar
Lunar
Lunisolar
Subdivisions
Other types
Arithmetical and astronomical
Other variants
Usage
Gregorian
Religious
National
Fiscal
Formats
Software
See also
References
Citations
Sources
Further reading
External links

thumb|Modern day Indonesian [[Gregorian calendar for a Catholic church]] thumb|British calendar, 1851, gilt bronze and malachite, height: 20.3 cm, [[Metropolitan Museum of Art (New York City)]]

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 a system. A calendar is also a physical record (often paper) of such a system. A calendar can also mean a list of planned events, such as a court calendar, or a partly or fully chronological list of documents, such as a calendar of wills.