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Published

October 12

vr.tr.october-12 · thing-q2920

Let an agent handle October 12 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 October 12 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 October 12 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 October 12, 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 October 12? 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

October 12, day 285 (day 286 in leap years) of the year in the Gregorian calendar, with 80 days remaining in both common and leap years. October 12 is the anniversary of Columbus reaching the Americas in 1492, observed as Fiesta Nacional in Spain, as Dia de la Raza or Indigenous Peoples days in parts of the Americas with contested meanings, and as Our Lady of Aparecida day in Brazil; it is also Independence Day in Equatorial Guinea.

Why it exists Filled

Let an agent handle October 12 as a calendar date with weekday computation, observances attributed to their traditions and sourced events.

Distinguishing features Filled

  • The twelfth day of October
  • 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 October 12 as a celebration everywhere, when indigenous peoples contest it.
  • Present an unsourced on-this-day event as fact.
  • Mix Julian and Gregorian dates when describing events in 1492.

Only with a human decision

  • Choosing how to name the observance in a publication for a given country.

May

  • Compute the weekday and day of year for October 12 in a given Gregorian year.
  • Name the different observances on October 12 in Spain, Latin America and Brazil with their sources.

Moral aspects Filled

  • The date marks colonization, which brought violence to indigenous peoples.
  • Different communities hold opposing meanings for the date.

Who is affected

  • Indigenous peoples of the Americas
  • Hispanic communities

Owners Filled

Steward

Nobody owns a calendar date; national holidays belong to the states that declare them.

Links to other meta-models Filled

parent

  • Q11185262 - registry parent class

related

  • October - month
  • October 11 - 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.october-12
  • Wikidata: Q2920 (https://www.wikidata.org/wiki/Q2920)
  • ISO 8601: --10-12 recurring date

Direct properties not applicable Not applicable

  • day of year: 285 or 286 day - common year, leap year where different
  • days remaining: 80 days

Plane XCT: no invented physical properties.

Recognition optional Filled

  • Written 12 October or October 12
  • ISO format --10-12
  • 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 Q2920: October 12 - identity and sense of the item
  2. Wikipedia: October 12 - 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-q2920/spec.json