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Published

December 15

vr.tr.december-15 · thing-q2383

Let an agent handle December 15 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 December 15 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 December 15 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 December 15, 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 December 15? 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

December 15, day 349 (day 350 in leap years) of the year in the Gregorian calendar, with 16 days remaining in both common and leap years. December 15 is Bill of Rights Day in the United States, marking the ratification of the Bill of Rights in 1791, and Zamenhof Day, celebrated by Esperanto speakers on the birthday of L. L. Zamenhof in 1859; it is also the anniversary of the Atlanta premiere of Gone with the Wind in 1939.

Why it exists Filled

Let an agent handle December 15 as a calendar date with weekday computation, observances attributed to their traditions and sourced events.

Distinguishing features Filled

  • The fifteenth day of December
  • 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 Bill of Rights Day or Zamenhof Day as internationally observed holidays.
  • Give on-this-day events for December 15 without a source.
  • Describe the premiere of a film of its era without noting how its portrayals are now judged.
  • Convert a December 15 date from a Julian-calendar source without saying so.

Only with a human decision

  • Scheduling civic commemorations tied to constitutional anniversaries.

May

  • State that December 15 is day 349 of the Gregorian year, day 350 in leap years.
  • List observances on December 15 with the body or community that holds each one.

Moral aspects Filled

  • Anniversaries of rights documents are used politically, so accuracy about them matters.
  • Cultural anniversaries can carry depictions that cause real offence today.

Who is affected

  • Citizens marking civic anniversaries
  • Esperanto speakers
  • Communities depicted in historical media

Owners Filled

Steward

Nobody owns a calendar date; each observance is kept by the body or community that declared it.

Links to other meta-models Filled

parent

  • Q11185379 - registry parent class

related

  • December - month
  • December 14 - 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.december-15
  • Wikidata: Q2383 (https://www.wikidata.org/wiki/Q2383)
  • ISO 8601: --12-15 recurring date

Direct properties not applicable Not applicable

  • day of year: 349 or 350 day - common year, leap year where different
  • days remaining: 16 days

Plane XCT: no invented physical properties.

Recognition optional Filled

  • Written 15 December or December 15
  • ISO format --12-15
  • 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 Q2383: December 15 - identity and sense of the item
  2. Wikipedia: December 15 - 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-q2383/spec.json