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Published

July 27

vr.tr.july-27 · thing-q2719

Let an agent handle July 27 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 July 27 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 July 27 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 July 27, 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 July 27? 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

July 27, day 208 (day 209 in leap years) of the year in the Gregorian calendar, with 157 days remaining in both common and leap years. July 27 is the anniversary of the Korean Armistice Agreement signed in 1953, marked in North Korea as Victory Day, and of the opening ceremony of the London 2012 Summer Olympics; in 1921 University of Toronto researchers led by Frederick Banting and Charles Best isolated insulin in work around this date.

Why it exists Filled

Let an agent handle July 27 as a calendar date with weekday computation, observances attributed to their traditions and sourced events.

Distinguishing features Filled

  • The twenty-seventh day of July
  • 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 North Korea's Victory Day framing of July 27 as the only account of the 1953 armistice.
  • Treat a national observance on this date as a holiday everywhere.
  • Repeat on-this-day events or births without a checkable source.
  • Convert a historic date from the Julian calendar without saying so.

Only with a human decision

  • Publishing a commemorative statement about the Korean War in an organisation's name.

May

  • Compute the weekday on which July 27 falls in a given year.
  • Relay events dated July 27, such as the 1953 Korean Armistice Agreement, with the source and the calendar used.
  • Say which country or tradition marks an observance on this date.

Moral aspects Filled

  • The Korean War never formally ended, and the date is commemorated very differently on each side.
  • Anniversaries of wars touch families of the dead and survivors.

Who is affected

  • Korean War veterans and families
  • People of North and South Korea
  • Readers of date facts

Owners Filled

Steward

Nobody owns a calendar date; observances belong to the states and bodies that declare them.

Links to other meta-models Filled

parent

  • Q11187356 - registry parent class

related

  • July - month
  • July 26 - 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.july-27
  • Wikidata: Q2719 (https://www.wikidata.org/wiki/Q2719)
  • ISO 8601: --07-27 recurring date

Direct properties not applicable Not applicable

  • day of year: 208 or 209 day - common year, leap year where different
  • days remaining: 157 days

Plane XCT: no invented physical properties.

Recognition optional Filled

  • Written 27 July or July 27
  • ISO format --07-27
  • 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 Q2719: July 27 - identity and sense of the item
  2. Wikipedia: July 27 - 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-q2719/spec.json