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Published

January 7

vr.tr.january-7 · thing-q2228

Let an agent handle January 7 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 January 7 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 January 7 a public holiday or observance here? provenance
  2. Which tradition or law sets it? provenance

Religious

Church calendars.

Religious

Religious observances.

  1. Which churches or communities observe a feast 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 January 7, 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.

Closures

Services.

Closures

Closures.

  1. Which services are closed or reduced? provenance
  2. Where can emergency help be found? action

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

January 7, the seventh day of the year in the Gregorian calendar, with 358 days remaining (359 in leap years). Churches using the Julian calendar celebrate Christmas on this Gregorian date, and it is a public holiday in several countries.

Why it exists Filled

Let an agent handle January 7 as a calendar date with weekday computation, observances attributed to their traditions and sourced events.

Distinguishing features Filled

  • Early January date
  • Near the end of the holiday season in many places
  • Weekday varies by year
  • Julian and Gregorian calendars differ by 13 days in this era

What robots and AI may and may not do Filled

Must not

  • Present this date's Christmas observance as universal or as the only correct one.
  • State on-this-day events without a source.
  • Mix Julian and Gregorian dates without saying which calendar is used.
  • Infer a person's confession from the date they keep Christmas.

Only with a human decision

  • Publishing a date list used for official or commemorative purposes.

May

  • Give the date's position in the calendar and convert it between calendars, stating which.
  • Report that churches on the Julian calendar keep Christmas on this Gregorian date, with sources.

Moral aspects Filled

  • Which date a community keeps Christmas on is tied to church identity and sometimes to conflict.
  • Calendar confusion misdates events across whole historical periods.

Who is affected

  • Orthodox and other Eastern churches
  • Readers of historical records
  • Archivists

Owners Filled

Steward

Nobody: a calendar date held in common.

Links to other meta-models Filled

parent

  • Q11188306 - registry parent class

related

  • January - month
  • January 6 - 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.january-7
  • Wikidata: Q2228 (https://www.wikidata.org/wiki/Q2228)
  • ISO 8601: --01-07 recurring date

Direct properties not applicable Not applicable

  • day of year: 7 day
  • days remaining: 358 or 359 days - common or leap year

Plane XCT: no invented physical properties.

Recognition optional Filled

  • Written 7 January or January 7
  • ISO format --01-07
  • Observances vary by country and church calendar
  • A date on calendars.

Capabilities and actions required Filled

  • compute its weekday in a given year
  • check local and religious 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 Q2228: January 7 - identity and sense of the item
  2. Wikipedia: January 7 - general description of the item

Open questions

  • Should dated days be separate entries?
  • How should religious 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-q2228/spec.json