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May 21: Events, Pre-1600 & 1601–1900

May 21 is the 141st day of the year (142nd in leap years) in the Gregorian calendar; 224 days remain until the end of the year.

Language: English [EN]
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May 21 topic overview

The analysis highlights Events, Pre-1600 and 1601–1900 as prominent areas in the source structure around May 21.

Related topics
888
Source areas
6
Connected nodes
894
Extracted relationships
82
Concept neighborhoods
80
Bridge connections
894

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.

1901–present · 383 topics
Events · 300 topics
1601–1900 · 135 topics
Pre-1600 · 37 topics
Holidays and observances · 31 topics
Overview · 2 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 Margach 1475 Aztec Ochpaniztli 11, 2 Quiyahuitl Babylonian 3 Ayaru, 2337 SE Balinese pawukon Luang, Pepet, Beteng, Jaya, Pon, Was, Wraspati of Wariga,… · 5 Margach 1475
Aztec
Ochpaniztli 11, 2 Quiyahuitl
Babylonian
3 Ayaru, 2337 SE
Balinese pawukon
Luang, Pepet, Beteng, Jaya, Pon, Was, Wraspati of Wariga, Kala, Tulus, Manuh
Bengali
7 Joishtho, BS 1433
Chinese
Yin Wood Goat・Well Mansion 5 Sìyue, Bǐngwǔnián (Xiaoman, 15 days until Mangzhong)

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

Events

Pre-1600

1601–1900

1901–present

Holidays and observances

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 May 21 connects Entity context

The extracted context around May 21 shows recurring relationship patterns in the source. For example, May 21 → Afro-Colombian Day, Anglican Communion, Ascension, Blessed Adílio Daronch, Blessed Hemming, Chile, Christian, Christopher MagallanesMay, Circassian Day, Circassians, Colombia, Constantinople, Corpus Christi, Cristero War, Cultural Diversity, Cunha, Day, Development, Dialogue, Eastern Orthodox Another extracted example is May 21 → BBC, Historical Events, May, On This Day, On This DayThe New, York Times. Use these groups to spot repeated connection types before inspecting the individual relationships.

May 21

Top relations

related to Holidays and observances · 51
May 21 → Afro-Colombian Day, Anglican Communion, Ascension, Blessed Adílio Daronch, Blessed Hemming, Chile, Christian, Christopher MagallanesMay, Circassian Day, Circassians, Colombia, Constantinople, Corpus Christi, Cristero War, Cultural Diversity, Cunha, Day, Development, Dialogue, Eastern Orthodox
related to External links · 6
May 21 → BBC, Historical Events, May, On This Day, On This DayThe New, York Times
Armenian · 2
May 21 → 5 Margach 1475, Other calendars Armenian 5 Margach 1475 Aztec Ochpaniztli 11, 2 Quiyahuitl Babylonian 3 Ayaru, 2337 SE Balinese pawukon Luang, Pepet, Beteng, Jaya, Pon, Was, Wraspati of Wariga,…
Aztec · 1
May 21 → Ochpaniztli 11, 2 Quiyahuitl
Babylonian · 1
May 21 → 3 Ayaru, 2337 SE
Balinese pawukon · 1
May 21 → Luang, Pepet, Beteng, Jaya, Pon, Was, Wraspati of Wariga, Kala, Tulus, Manuh
Bengali · 1
May 21 → 7 Joishtho, BS 1433
Chinese · 1
May 21 → Yin Wood Goat・Well Mansion 5 Sìyue, Bǐngwǔnián (Xiaoman, 15 days until Mangzhong)
Common Era · 1
May 21 → 21 May 2026 CE
Coptic · 1
May 21 → 13 Pashons, AM 1742

Important terminology

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

Important terminology

war american french john day died politician de president english academic author people player composer actor born end 21 first

May 21 relationships Subject–Predicate–Object triples

TTTA extracted 82 structured relationships around May 21. Examples in this analysis include May 21 → Armenian → Other calendars Armenian 5 Margach 1475 Aztec Ochpaniztli 11, 2 Quiyahuitl Babylonian 3 Ayaru, 2337 SE Balinese pawukon Luang, Pepet, Beteng, Jaya, Pon, Was, Wraspati of Wariga,… and May 21 → Armenian → 5 Margach 1475. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
May 21ArmenianOther calendars Armenian 5 Margach 1475 Aztec Ochpaniztli 11, 2 Quiyahuitl Babylonian 3 Ayaru, 2337 SE Balinese pawukon Luang, Pepet, Beteng, Jaya, Pon, Was, Wraspati of Wariga,…1.00infobox
May 21Armenian5 Margach 14751.00infobox
May 21AztecOchpaniztli 11, 2 Quiyahuitl1.00infobox
May 21Babylonian3 Ayaru, 2337 SE1.00infobox
May 21Balinese pawukonLuang, Pepet, Beteng, Jaya, Pon, Was, Wraspati of Wariga, Kala, Tulus, Manuh1.00infobox
May 21Bengali7 Joishtho, BS 14331.00infobox
May 21ChineseYin Wood Goat・Well Mansion 5 Sìyue, Bǐngwǔnián (Xiaoman, 15 days until Mangzhong)1.00infobox
May 21Common Era21 May 2026 CE1.00infobox
May 21Coptic13 Pashons, AM 17421.00infobox
May 21Egyptian5 Phaophi, 2775 NE1.00infobox
May 21Ethiopian13 Genbot, 2018 Amätä Məhrät1.00infobox
May 21French RepublicanDécade I, Duodi de Prairial de l'Année 234 de la République1.00infobox
May 21Gregorian21 May, AD 20261.00infobox
May 21Hebrew5 Sivan, AM 5786 Omer 491.00infobox
May 21Hindu5127 KY・1,872,716・Rāudra Solar: 7 Jyeṣṭha, 1948 SE Lunisolar: Pañcamī, Śukla pakṣa of Adhika Jyeṣṭha, 2083 VE1.00infobox
May 21IcelandicFimmtudagur, 29 Harpa 20261.00infobox
May 21Islamic4 Dhu al-Hijjah, AH 1447 (using tabular method)1.00infobox
May 21ISO week date2026-W21-41.00infobox
May 21Japanese5 Uzuki, Reiwa 8 (Shōman, 16 days until Bōshu)1.00infobox
May 21Julian8 May, AD 2026 (AM 7534)1.00infobox
May 21Julian day24611821.00infobox
May 21Maya13.0.13.10.19 12 Zip, 2 Cauac1.00infobox
May 21Romanante diem VIII Idus Maias, MMDCCLXXIX AUC1.00infobox
May 21Solar Hijri31 Ordibehesht, SH 14051.00infobox
May 21is a141st day of the year0.90text

Related concept clusters Concept neighborhoods

The concept neighborhoods around May 21 bring nearby vocabulary together. In this analysis, examples include Academic, American and Player. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • pope john viii
    • Academic
    • American
    • Player
    • Author
    • English
    • Died
    • Politician
    • Minister
    • Actor
    • Born
    • Physician
    • Italian
  • john vi kantakouzenos
    • Academic
    • American
    • Player
    • Author
    • English
    • Died
    • Politician
    • Minister
    • Actor
    • Born
    • Physician
    • Italian
  • ruy gonzález de clavijo
    • Born
    • Japanese
    • English
    • Dutch
    • Italian
    • Politician
    • Race
    • American
    • Academic
    • Roman
    • John
    • Physician
  • dutch republic
    • Actor
    • Author
    • English
    • Screenwriter
    • Died
    • Politician
    • Director
    • Composer
    • American
    • Player
    • Academic
    • Japanese
  • french
    • Academic
    • English
    • Politician
    • Player
    • Physician
    • American
    • Author
    • Journalist
    • Died
    • Composer
    • Japanese
    • Dutch
  • john sobieski
    • Academic
    • American
    • Player
    • Author
    • English
    • Died
    • Politician
    • Minister
    • Actor
    • Born
    • Physician
    • Italian
  • french and indian war
    • Academic
    • English
    • Politician
    • Player
    • Physician
    • American
    • Author
    • Journalist
    • Died
    • Composer
    • Japanese
    • Dutch
  • japanese
    • Italian
    • Minister
    • President
    • Academic
    • Author
    • English
    • Physician
    • Politician
    • Dutch
    • Journalist
    • Actor
    • Born

Connections between topic areas Semantic bridges

For May 21, one of the stronger structural bridges in this analysis connects May 21 with 1901–present. 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
May 211901–present · splits 511 ⟂ 384
May 21Events · splits 594 ⟂ 301
May 211601–1900 · splits 759 ⟂ 136
May 21Pre-1600 · splits 857 ⟂ 38
May 21Holidays and observances · splits 863 ⟂ 32
May 21Overview · splits 892 ⟂ 3

Map overview Semantic statistics

May 21

Nodes895
Edges894
Triples82
Avg. degree2
Density0.002235
Components1

Source & methodology

TTTA analyzes the structure around May 21 to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Events, Pre-1600 & 1601–1900, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — May 21 · EN edition · Analysis: TopicsToTalkAbout

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