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Published

December 29

vr.tr.december-29 · thing-q2862

Let an agent handle December 29 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 29 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 29 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 29, 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 29? 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 29, day 363 (day 364 in leap years) of the year in the Gregorian calendar, with 2 days remaining in both common and leap years. December 29 is the anniversary of the Wounded Knee Massacre of Lakota people by the US Army in 1890, of the murder of Thomas Becket in Canterbury Cathedral in 1170, of Texas statehood in 1845, and of the 1996 Guatemalan peace accords ending a 36-year civil war.

Why it exists Filled

Let an agent handle December 29 as a calendar date with weekday computation, observances attributed to their traditions and sourced events.

Distinguishing features Filled

  • The twenty-ninth 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

  • Describe the 1890 killing of Lakota people as a battle rather than a massacre.
  • List the date's events without noting which remain painful to the descendants of the victims.
  • Present Texas statehood or other national anniversaries as observed everywhere.
  • Add on-this-day events without a source.

Only with a human decision

  • Publishing commemorative content about the Wounded Knee Massacre or the Guatemalan conflict.

May

  • Report December 29 as day 363, or 364 in leap years, of the Gregorian calendar.
  • Relay sourced events on this date, such as the 1170 murder of Thomas Becket and the 1996 Guatemalan peace accords.

Moral aspects Filled

  • The Wounded Knee Massacre is a living grief for Lakota people and must be named honestly.
  • Guatemala's conflict left mass graves and survivors who are still seeking justice.

Who is affected

  • Lakota and other Native nations
  • Survivors of the Guatemalan conflict
  • Readers

Owners Filled

Steward

Nobody owns a date; the Gregorian calendar is held in common.

Links to other meta-models Filled

parent

  • Q11187374 - registry parent class

related

  • December - month
  • December 28 - 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-29
  • Wikidata: Q2862 (https://www.wikidata.org/wiki/Q2862)
  • ISO 8601: --12-29 recurring date

Direct properties not applicable Not applicable

  • day of year: 363 or 364 day - common year, leap year where different
  • days remaining: 2 days

Plane XCT: no invented physical properties.

Recognition optional Filled

  • Written 29 December or December 29
  • ISO format --12-29
  • 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 Q2862: December 29 - identity and sense of the item
  2. Wikipedia: December 29 - 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-q2862/spec.json