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Published

December 1

vr.tr.december-1 · thing-q2297

Let an agent handle December 1 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 1 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 1 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 1, 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 1? 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 1, day 335 (day 336 in leap years) of the year in the Gregorian calendar, with 30 days remaining in both common and leap years. World AIDS Day, established by the World Health Organization and now led by UNAIDS, is observed on this date; December 1 is also a national day in Romania and the start of meteorological winter in the northern hemisphere; other observances vary by country and tradition.

Why it exists Filled

Let an agent handle December 1 as a calendar date with weekday computation, observances attributed to their traditions and sourced events.

Distinguishing features Filled

  • The first 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 any national day on this date as applying everywhere.
  • Use World AIDS Day content to stigmatise people living with HIV.
  • List unsourced on-this-day events or invented anniversaries.
  • Mix Julian and Gregorian dates for events before calendar reform without saying so.

Only with a human decision

  • Publishing World AIDS Day health messaging for a named organisation.

May

  • Compute the weekday of December 1 in a given year and its day number.
  • List observances on December 1, such as World AIDS Day and national days, with who keeps them.
  • Report sourced historical events on December 1.

Moral aspects Filled

  • People living with HIV still face stigma; this day's messaging must not add to it.
  • National days may mark contested history; present them with attribution.

Who is affected

  • People living with HIV
  • People who mark national days
  • Health workers

Owners Filled

Steward

Nobody: a calendar date held in common.

Links to other meta-models Filled

parent

  • Q11186375 - registry parent class

related

  • December - month
  • November 30 - 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-1
  • Wikidata: Q2297 (https://www.wikidata.org/wiki/Q2297)
  • ISO 8601: --12-01 recurring date

Direct properties not applicable Not applicable

  • day of year: 335 or 336 day - common year, leap year where different
  • days remaining: 30 days

Plane XCT: no invented physical properties.

Recognition optional Filled

  • Written 1 December or December 1
  • ISO format --12-01
  • 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 Q2297: December 1 - identity and sense of the item
  2. Wikipedia: December 1 - 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-q2297/spec.json