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Published

June 23

vr.tr.june-23 · thing-q2668

Let an agent handle June 23 as a calendar date with weekday computation, observances attributed to their traditions and sourced events.

Thing Registry Cross-cutting context XCT.TME
Bundle → Layer → Finding → QuestionsClassifiersWhat it isWhy it existsDistinguishing featuresWhat robots and AI may and may not doMoral aspectsOwnersLinks to other meta-modelsIdentity and identifiersDirect propertiesRecognitionCapabilities and actionsHazards and failure modesStandards and interfacesContext of useSources

Bundle → Layer → Finding → Questions Filled

4 bundles · 8 layers · 8 findings · 16 questions

Date Calendar facts.

Weekday

Computation.

Weekday

Weekday.

  1. On which weekday does June 23 fall in this year? measurement
  2. Is it a leap year? boundary

Calendar

Julian or Gregorian.

Calendar

Calendar system.

  1. Is the Julian or Gregorian calendar meant? boundary
  2. What is the equivalent date in the other calendar? measurement
Observances Holidays.

Holiday

Public holiday.

Holiday

Holiday status.

  1. Is June 23 a public holiday or observance here? provenance
  2. Which tradition or law sets it? provenance

Attribution

Traditions.

Attribution

Attributed observances.

  1. Which countries or communities observe something on this date, according to them? provenance
  2. Is the observance attributed rather than assumed? boundary
History Past events.

Events

On this day.

Events

Historical events.

  1. Which notable events happened on June 23, according to reliable sources? provenance
  2. Are dates given in the same calendar? boundary

Anniversaries

Recurring.

Anniversaries

Anniversaries.

  1. Which anniversaries fall on this date this year? provenance
  2. Which are round numbers? measurement
Planning Scheduling.

Countdown

Days until.

Countdown

Countdown.

  1. How many days until the next June 23? measurement
  2. From which date? definition

Work

Working day.

Work

Working day.

  1. Is it a working day for this organisation? provenance
  2. Do deadlines move? boundary

Classifiers Filled

Family
Thing Registry
Category
Cross-cutting context
Entry kind
thing
Plane
XCT
Domain
XCT.TME

What it is Filled

June 23, day 174 (day 175 in leap years) of the year in the Gregorian calendar, with 191 days remaining in both common and leap years. June 23 is International Widows Day and United Nations Public Service Day; in many European countries it is Midsummer Eve or St John's Eve, and it is a national holiday in Luxembourg.

Why it exists Filled

Let an agent handle June 23 as a calendar date with weekday computation, observances attributed to their traditions and sourced events.

Distinguishing features Filled

  • The twenty-third day of June
  • Weekday varies by year
  • Observances vary by place
  • Julian and Gregorian dates differ by 13 days in this era

What robots and AI may and may not do Filled

Must not

  • Present observances on June 23 as universal.
  • Encourage unsafe bonfires or fireworks during Midsummer Eve celebrations.
  • Use International Widows Day material in ways that pity or stereotype widows.
  • List on-this-day events on June 23 without sources.

Only with a human decision

  • Scheduling public events or messages tied to June 23 for an organisation.

May

  • Give the day number and the observances on June 23, saying where each is marked.
  • Explain Midsummer Eve and St John's Eve traditions on June 23 in the countries that hold them.

Moral aspects Filled

  • International Widows Day concerns women who face poverty and exclusion after losing a spouse.
  • Midsummer traditions are cultural heritage and also cause fire injuries each year.

Who is affected

  • Widows and their children
  • Communities that keep midsummer traditions

Owners Filled

Steward

Nobody owns a calendar date; governments and international bodies decide official observances.

Links to other meta-models Filled

parent

  • Q11187283 - registry parent class
  • Q205892 - registry parent class

related

  • June - month
  • June 22 - date
  • calendar date - category
  • ISO 8601 - notation

What else AI and robots need to interact with it Filled

Identity and identifiers required Filled

  • Vercy registry: vr.tr.june-23
  • Wikidata: Q2668 (https://www.wikidata.org/wiki/Q2668)
  • ISO 8601: --06-23 recurring date

Direct properties not applicable Not applicable

  • day of year: 174 or 175 day - common year, leap year where different
  • days remaining: 191 days

Plane XCT: no invented physical properties.

Recognition optional Filled

  • Written 23 June or June 23
  • ISO format --06-23
  • Observances vary by country and tradition
  • A date on calendars.

Capabilities and actions required Filled

  • compute its weekday in a given year
  • check local and international observances
  • find sourced historical events
  • schedule events

Hazards and failure modes required Filled

  • Assuming observances are universal
  • Unsourced on-this-day events
  • Mixing Julian and Gregorian dates

Standards and interfaces required Filled

  • ISO 8601
  • National public holiday laws

Context of use required Filled

  • A calendar date for scheduling, holidays and anniversaries.
  • the recurring calendar date
  • specific dated days in given years

Sources Filled

  1. Wikidata item Q2668: June 23 - identity and sense of the item
  2. Wikipedia: June 23 - general description of the item

Open questions

  • Should dated days be separate entries?
  • How should observances be linked?
  • How should events be sourced?

Machine files

Card as JSON Specification Card backlog vercy.card/1

Provenance

thing registry research (pass 2) · unreviewed

Built from: models/things/publications/thing-q2668/spec.json