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Calendar: History, Systems & Usage

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…

Language: English [EN]
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Calendar topic overview

The analysis highlights History, Systems and Usage as prominent areas in the source structure around Calendar.

Related topics
156
Source areas
9
Connected nodes
172
Extracted relationships
287
Concept neighborhoods
71
Bridge connections
172

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Usage · 55 topics
History · 31 topics
Systems · 23 topics
Software · 13 topics
Overview · 12 topics
Formats · 9 topics
Subdivisions · 7 topics
Etymology · 3 topics
Other types · 3 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Armenian
Other calendars Armenian 5 Hoṙi 1476 Aztec Atemoztli 6, 6 Ocēlōtl Babylonian 10 Abu, 2337 SE Balinese pawukon Luang, Pepet, Pasah, Menala, Pon, Paniron, Coma of Matal, Yama, Noh… · 5 Hoṙi 1476
Aztec
Atemoztli 6, 6 Ocēlōtl
Babylonian
10 Abu, 2337 SE
Balinese pawukon
Luang, Pepet, Pasah, Menala, Pon, Paniron, Coma of Matal, Yama, Nohan, Pati
Bengali
9 Bhadro, BS 1433
Chinese
Yang Metal Horse・Heart Mansion 12 Qīyuè, Bǐngwǔnián (Chushu, 14 days until Bailu)

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

Etymology

History

Systems

Subdivisions

Other types

Usage

Formats

Software

Sources

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How Calendar connects Entity context

The extracted context around Calendar shows recurring relationship patterns in the source. For example, Calendar → Ahmad, American Heritage Dictionary, Arthur, Astronomical Almanac, Bibcode, Bonnie, Calendars, Calendrical Calculations, Cambridge University Press, Chicago Press, Christian Eras, Comparative Calendar, Dieter, Edward, Eviatar, Explanatory Supplement, Feldheim Publishers, Franz Steiner Verlag, German, Geschichte Another extracted example is Calendar → Afghanistan, Assyrian, Buddhist, Eritrea, Ethiopia, Ethiopic, Gregorian, Hebrew, Hindu, In, In Thailand, Iran, Iraq, Islamic, Julian, Middle East, Oromo, Persian, Somali, Somalia. Use these groups to spot repeated connection types before inspecting the individual relationships.

Calendar

Top relations

related to Sources · 57
Calendar → Ahmad, American Heritage Dictionary, Arthur, Astronomical Almanac, Bibcode, Bonnie, Calendars, Calendrical Calculations, Cambridge University Press, Chicago Press, Christian Eras, Comparative Calendar, Dieter, Edward, Eviatar, Explanatory Supplement, Feldheim Publishers, Franz Steiner Verlag, German, Geschichte
related to National · 28
Calendar → Afghanistan, Assyrian, Buddhist, Eritrea, Ethiopia, Ethiopic, Gregorian, Hebrew, Hindu, In, In Thailand, Iran, Iraq, Islamic, Julian, Middle East, Oromo, Persian, Somali, Somalia
related to Fiscal · 24
Calendar → April, December, Diwali, February, Gregorian, In, India, India's, ISO, It, January, March, Monday, Note, October, Saturday, September, Small, Sunday, The
related to Gregorian · 14
Calendar → During, Each Gregorian, Early Modern, Easter, European, European Middle Ages, February, Greece, Gregorian, Julian, Roman Catholic, The, The Gregorian, There
related to Software · 13
Calendar → Calendaring, EDAs, Exchange Server, Google Calendar, In, Lightning, Microsoft Outlook, Mozilla Sunbird, Mozilla Thunderbird, PDAs, The, Windows Calendar, Windows Live Calendar
related to Solar · 11
Calendar → Dog Star, However, Nile River, Other, Sirius, Solar, Sothis, Sun, The, The Egyptians, They
related to Arithmetical and astronomical · 10
Calendar → After, An, Earth's, Furthermore, Islamic, Jewish, Second Temple, Such, The, This
related to history · 10
Calendar → Ancient Near East, Bronze Age Egyptian, Earth, Etruscan, Moon, Nevertheless, Roman, Sumerian, Sun, The
related to Lunar · 10
Calendar → Alexander Marshack, An, BC, Because, Islamic, It, Michael Rappenglueck, Not, Other, Similarly
related to Lunisolar · 9
Calendar → Another, Buddhist, Chinese, Hebrew, Hindu, Japanese, Korean, Prominent, Vietnamese

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

year days calendars time day solar also lunar date years gregorian months used may month week julian use religious lunisolar

Calendar relationships Subject–Predicate–Object triples

TTTA extracted 287 structured relationships around Calendar. Examples in this analysis include Calendar → Armenian → Other calendars Armenian 5 Hoṙi 1476 Aztec Atemoztli 6, 6 Ocēlōtl Babylonian 10 Abu, 2337 SE Balinese pawukon Luang, Pepet, Pasah, Menala, Pon, Paniron, Coma of Matal, Yama, Noh… and Calendar → Armenian → 5 Hoṙi 1476. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
CalendarArmenianOther calendars Armenian 5 Hoṙi 1476 Aztec Atemoztli 6, 6 Ocēlōtl Babylonian 10 Abu, 2337 SE Balinese pawukon Luang, Pepet, Pasah, Menala, Pon, Paniron, Coma of Matal, Yama, Noh…1.00infobox
CalendarArmenian5 Hoṙi 14761.00infobox
CalendarAztecAtemoztli 6, 6 Ocēlōtl1.00infobox
CalendarBabylonian10 Abu, 2337 SE1.00infobox
CalendarBalinese pawukonLuang, Pepet, Pasah, Menala, Pon, Paniron, Coma of Matal, Yama, Nohan, Pati1.00infobox
CalendarBengali9 Bhadro, BS 14331.00infobox
CalendarChineseYang Metal Horse・Heart Mansion 12 Qīyuè, Bǐngwǔnián (Chushu, 14 days until Bailu)1.00infobox
CalendarCommon Era24 August 2026 CE1.00infobox
CalendarCoptic18 Mesori, AM 17421.00infobox
CalendarEgyptian10 Tybi, 2775 NE1.00infobox
CalendarEthiopian18 Naḥasē, 2018 Amätä Məhrät1.00infobox
CalendarFrench RepublicanDécade I, Septidi de Fructidor de l'Année 234 de la République1.00infobox
CalendarGregorian24 August, AD 20261.00infobox
CalendarHebrew11 Elul, AM 57861.00infobox
CalendarHindu5127 KY・1,872,811・Rāudra Solar: 8 Bhādrapada, 1948 SE Lunisolar: Dvādaśī, Śukla pakṣa of Śrāvaṇa, 2083 VE1.00infobox
CalendarIcelandicMánudagur, 30 Heyannir 20261.00infobox
CalendarIslamic10 Rabi' al-awwal, AH 1448 (using tabular method)1.00infobox
CalendarISO week date2026-W35-11.00infobox
CalendarJapanese12 Fumizuki, Reiwa 8 (Shosho, 14 days until Hakuro)1.00infobox
CalendarJulian11 August, AD 2026 (AM 7534)1.00infobox
CalendarJulian day24612771.00infobox
CalendarMaya13.0.13.15.14 7 Mol, 6 Ix1.00infobox
CalendarRomanante diem III Idus Augustas, MMDCCLXXIX AUC1.00infobox
CalendarSolar Hijri2 Shahrivar, SH 14051.00infobox
Calendaris asystem of organizing days0.90text
Calendaris alunar calendar that compensates by adding an extra month as needed to realign the months with the seasons0.90text
Calendaris aease of calculating when a particular date occurs0.90text
Calendaris ade facto international standard and is used almost everywhere in the world for civil purposes0.90text
Calendaris alunar calendar consisting of 12 lunar months in a year of 354 or 355 days0.90text
Calendaris aprincipal calendar used in Ethiopia and Eritrea0.90text

Related concept clusters Concept neighborhoods

The concept neighborhoods around Calendar bring nearby vocabulary together. In this analysis, examples include Year, Gregorian and Solar. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Calendar
    • Year
    • Gregorian
    • Solar
    • Days
    • Also
    • Lunar
    • Calendars
    • Based
    • Use
    • Years
    • Julian
    • Day
  • calendar
    • Year
    • Gregorian
    • Solar
    • Days
    • Also
    • Lunar
    • Calendars
    • Based
    • Use
    • Years
    • Julian
    • Day
  • days
    • Years
    • Months
    • Year
    • Solar
    • Islamic
    • Religious
    • Day
    • Periods
    • Week
    • Gregorian
    • Date
    • Lunar
  • time
    • Used
    • Events
    • Calendars
    • Day
    • Years
    • Date
    • Seasons
    • Moon
    • Cycle
    • Religious
    • System
    • Julian
  • years
    • Months
    • Days
    • Calendar
    • Periods
    • Time
    • Moon
    • Year
    • Solar
    • Cycle
    • Example
    • Julian
    • Based
  • date
    • Day
    • System
    • Islamic
    • Moon
    • Gregorian
    • Julian
    • Days
    • Used
    • Lunar
    • Systems
    • Time
    • Events
  • court calendar
    • Year
    • Gregorian
    • Solar
    • Days
    • Also
    • Lunar
    • Calendars
    • Based
    • Use
    • Years
    • Julian
    • Day
  • moon
    • Hebrew
    • Synchronized
    • Julian
    • Month
    • Lunar
    • Systems
    • Events
    • Week
    • Islamic
    • Used
    • Gregorian
    • Periods

Connections between topic areas Semantic bridges

For Calendar, one of the stronger structural bridges in this analysis connects Calendar with Usage. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
Calendar — Usage · splits 117 ⟂ 56
Calendar — History · splits 141 ⟂ 32
Calendar — Systems · splits 149 ⟂ 24
Calendar — Software · splits 159 ⟂ 14
Calendar — Overview · splits 160 ⟂ 13
Calendar — Formats · splits 163 ⟂ 10
Calendar — Subdivisions · splits 165 ⟂ 8
Calendar — Sources · splits 166 ⟂ 7
Calendar — Etymology · splits 169 ⟂ 4
Calendar — Other types · splits 169 ⟂ 4

Map overview Semantic statistics

Calendar

Nodes173
Edges172
Triples287
Avg. degree1.99
Density0.011561
Components1

Source & methodology

TTTA analyzes the structure around Calendar to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History, Systems & Usage, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Calendar · EN edition · Analysis: TopicsToTalkAbout

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