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Published

December 28

vr.tr.december-28 · thing-q2832

Let an agent handle December 28 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 28 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 28 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 28, 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 28? 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 28, day 362 (day 363 in leap years) of the year in the Gregorian calendar, with 3 days remaining in both common and leap years. December 28 is the Feast of the Holy Innocents in Western Christianity, observed in Spain and Latin America as the Day of the Innocents with pranks, the anniversary of Iowa statehood in 1846, of a landmark paid public film screening by the Lumiere brothers in Paris in 1895, and of the 1908 Messina earthquake.

Why it exists Filled

Let an agent handle December 28 as a calendar date with weekday computation, observances attributed to their traditions and sourced events.

Distinguishing features Filled

  • The twenty-eighth 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

  • Spread a Day of the Innocents prank as real news.
  • Present a regional observance on this date as universal.
  • List births or deaths on this date without sources.
  • Mix Julian and Gregorian dates for historical events without saying so.

Only with a human decision

  • Publishing an on-this-day item that names a living person.

May

  • Report events and observances for December 28 with sources and the calendar used.
  • Explain the Feast of the Holy Innocents and the Day of the Innocents customs where they apply.

Moral aspects Filled

  • Prank traditions on this date can make false news spread further.
  • The feast commemorates a massacre of children and is solemn for many believers.

Who is affected

  • Readers
  • Christian communities
  • People named in anniversaries

Owners Filled

Steward

Nobody: a calendar date held in common.

Links to other meta-models Filled

parent

  • Q11187366 - registry parent class

related

  • December - month
  • December 27 - 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-28
  • Wikidata: Q2832 (https://www.wikidata.org/wiki/Q2832)
  • ISO 8601: --12-28 recurring date

Direct properties not applicable Not applicable

  • day of year: 362 or 363 day - common year, leap year where different
  • days remaining: 3 days

Plane XCT: no invented physical properties.

Recognition optional Filled

  • Written 28 December or December 28
  • ISO format --12-28
  • 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 Q2832: December 28 - identity and sense of the item
  2. Wikipedia: December 28 - 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-q2832/spec.json