← Back to catalogue
Published

July 28

vr.tr.july-28 · thing-q2718

Let an agent handle July 28 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 28 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 28 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 28, 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 28? 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 28, day 209 (day 210 in leap years) of the year in the Gregorian calendar, with 156 days remaining in both common and leap years. July 28 is World Hepatitis Day, recognised by the World Health Organization, and Independence Day in Peru marking the 1821 proclamation; it is also the anniversary of Austria-Hungary s declaration of war on Serbia in 1914, which began the First World War, and of the Tangshan earthquake in China in 1976.

Why it exists Filled

Let an agent handle July 28 as a calendar date with weekday computation, observances attributed to their traditions and sourced events.

Distinguishing features Filled

  • The twenty-eighth 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

  • Offer individual hepatitis testing or treatment advice in the name of World Hepatitis Day instead of referring to a clinician.
  • Treat Peru's national holiday as observed elsewhere.
  • Repeat on-this-day claims that cannot be sourced.
  • Use the anniversary of the First World War to promote a nationalist reading as fact.

Only with a human decision

  • Publishing health awareness messages about hepatitis in an organisation's name.

May

  • Compute the weekday of July 28 in a given year.
  • Relay that July 28 is World Hepatitis Day, recognised by the World Health Organization, and Independence Day in Peru.
  • Explain the 1914 declaration of war on Serbia on this date with historical sources.

Moral aspects Filled

  • People living with hepatitis face stigma; awareness messages must not add to it.
  • War anniversaries are remembered differently by the nations involved.

Who is affected

  • People living with hepatitis
  • People of Peru
  • Readers of date facts

Owners Filled

Steward

Nobody owns a calendar date; the World Health Organization coordinates World Hepatitis Day and Peru its national holiday.

Links to other meta-models Filled

parent

  • Q11187366 - registry parent class

related

  • July - month
  • July 27 - 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-28
  • Wikidata: Q2718 (https://www.wikidata.org/wiki/Q2718)
  • ISO 8601: --07-28 recurring date

Direct properties not applicable Not applicable

  • day of year: 209 or 210 day - common year, leap year where different
  • days remaining: 156 days

Plane XCT: no invented physical properties.

Recognition optional Filled

  • Written 28 July or July 28
  • ISO format --07-28
  • 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 Q2718: July 28 - identity and sense of the item
  2. Wikipedia: July 28 - 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-q2718/spec.json