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Published

August 18

vr.tr.august-18 · thing-q2826

Let an agent handle August 18 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 August 18 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 August 18 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 August 18, 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 August 18? 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

August 18, day 230 (day 231 in leap years) of the year in the Gregorian calendar, with 135 days remaining in both common and leap years. August 18 is the anniversary of Tennessee s ratification of the Nineteenth Amendment in 1920, which completed the approval needed for women s suffrage in the United States, and of the 1868 solar eclipse during which Pierre Janssen observed the spectral line later attributed to helium.

Why it exists Filled

Let an agent handle August 18 as a calendar date with weekday computation, observances attributed to their traditions and sourced events.

Distinguishing features Filled

  • The eighteenth day of August
  • 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

  • Misdate the ratification events or overstate their effect on voting rights for all women.
  • Attribute an event to August 18 when it happened on another date in another time zone.
  • Present a commemoration of one country as universal.

Only with a human decision

  • Fixing a legally binding deadline on August 18.

May

  • State August 18's day number and remaining days correctly for common and leap years.
  • Name anniversaries on August 18, such as Tennessee's ratification of the Nineteenth Amendment, from reliable sources.

Moral aspects Filled

  • Women's suffrage anniversaries also recall women who stayed excluded by race.

Who is affected

  • People relying on dates
  • Communities commemorating the date

Owners Filled

Steward

Nobody owns a date; calendar authorities and states set official observances.

Links to other meta-models Filled

parent

  • Q11185474 - registry parent class

related

  • August - month
  • August 17 - 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.august-18
  • Wikidata: Q2826 (https://www.wikidata.org/wiki/Q2826)
  • ISO 8601: --08-18 recurring date

Direct properties not applicable Not applicable

  • day of year: 230 or 231 day - common year, leap year where different
  • days remaining: 135 days

Plane XCT: no invented physical properties.

Recognition optional Filled

  • Written 18 August or August 18
  • ISO format --08-18
  • 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 Q2826: August 18 - identity and sense of the item
  2. Wikipedia: August 18 - 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-q2826/spec.json