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May 15

day of the year

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 22, 2026
Entity authorityQ2562
Source-derived summary

May 15 is the 135th day of the year (136th in leap years) in the Gregorian calendar; 230 days remain until the end of the year.

Events

Pre-1600

221 – Liu Bei, Chinese warlord, proclaims himself emperor of Shu Han, the successor of the Han dynasty.

392 – Emperor Valentinian II is assassinated while advancing into Gaul against the Frankish usurper Arbogast. He is found hanging in his residence at Vienne.

589 – King Authari marries Theodelinda, daughter of the Bavarian duke Garibald I. A Catholic, she has great influence among the Lombard nobility.

756 – Abd al-Rahman I, the founder of the Arab dynasty that ruled the greater part of Iberia for nearly three centuries, becomes emir of Cordova, Spain.

908 – Constantine VII is crowned Byzantine co-emperor.

1194 – Michael the Syrian reconsecrates the Mor Bar Sauma Monastery, which he reconstructed after its destruction by a fire. The monastery stays a center of the Syriac Orthodox Church until the end of the thirteenth century.

1252 – Pope Innocent IV issues the papal bull ad extirpanda, which authorizes, but also limits, the torture of heretics in the Medieval Inquisition.

Editorial summary

The public source identifies “May 15” as day of the year. This brief keeps that definition visible, then builds a research path around year.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—1600, 1194, 1252—that can be checked directly. The selected authority fields contribute no independent date. Its value is orientation rather than verdict, with year providing the first useful test.
Editorial analysis

Why this record matters

A short description can identify a subject without explaining its stakes. For “May 15”, the useful work is to connect “day of the year” to the records capable of establishing context and consequence.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Aug 22, 2026. The linked authority identifier is Q2562. The first chronological checks are 1600, 1194 and 1252.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “May 15”, its source revision and the description used here.
  2. Expand the search: follow May 15 primary sources, May 15 archive and year research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “May 15”?
  2. Which institution is responsible for the underlying evidence?
  3. What terminology or title could unlock a more precise catalogue search?
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Source & attribution

This entry incorporates text from May 15” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.