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Published

June 19

vr.tr.june-19 · thing-q2669

Let an agent handle June 19 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 19 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 19 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 19, 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 19? 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 19, day 170 (day 171 in leap years) of the year in the Gregorian calendar, with 195 days remaining in both common and leap years. June 19 is observed in the United States as Juneteenth, commemorating the end of slavery, and as a national day in some other countries.

Why it exists Filled

Let an agent handle June 19 as a calendar date with weekday computation, observances attributed to their traditions and sourced events.

Distinguishing features Filled

  • The nineteenth 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

  • Minimise or misstate the history of slavery that Juneteenth commemorates.
  • Assume Juneteenth or other June 19 national days apply outside the countries that hold them.
  • Use the commemoration for advertising in a way that trivialises it.

Only with a human decision

  • Publishing content that speaks for the communities that commemorate the date.

May

  • Explain June 19 and its observance in the United States as Juneteenth, citing the history.
  • Check whether June 19 is a public holiday in a given jurisdiction before scheduling on it.

Moral aspects Filled

  • Juneteenth marks the end of slavery; how it is described affects descendants of the enslaved.
  • Public holidays affect pay, services and legal deadlines.

Who is affected

  • Descendants of enslaved people
  • Workers and employers
  • People with deadlines on the date

Owners Filled

Steward

Nobody: a calendar date is held in common; each state defines its own observances.

Links to other meta-models Filled

parent

  • Q11186284 - registry parent class

related

  • June - month
  • June 18 - 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-19
  • Wikidata: Q2669 (https://www.wikidata.org/wiki/Q2669)
  • ISO 8601: --06-19 recurring date

Direct properties not applicable Not applicable

  • day of year: 170 or 171 day - common year, leap year where different
  • days remaining: 195 days

Plane XCT: no invented physical properties.

Recognition optional Filled

  • Written 19 June or June 19
  • ISO format --06-19
  • 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 Q2669: June 19 - identity and sense of the item
  2. Wikipedia: June 19 - 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-q2669/spec.json