June 20
Let an agent handle June 20 as a calendar date with weekday computation, observances attributed to their traditions and sourced events.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Date Calendar facts.
Weekday
Computation.
Weekday
Weekday.
- On which weekday does June 20 fall in this year? measurement
- Is it a leap year? boundary
Calendar
Julian or Gregorian.
Calendar
Calendar system.
- Is the Julian or Gregorian calendar meant? boundary
- What is the equivalent date in the other calendar? measurement
Observances Holidays.
Holiday
Public holiday.
Holiday
Holiday status.
- Is June 20 a public holiday or observance here? provenance
- Which tradition or law sets it? provenance
Attribution
Traditions.
Attribution
Attributed observances.
- Which countries or communities observe something on this date, according to them? provenance
- Is the observance attributed rather than assumed? boundary
History Past events.
Events
On this day.
Events
Historical events.
- Which notable events happened on June 20, according to reliable sources? provenance
- Are dates given in the same calendar? boundary
Anniversaries
Recurring.
Anniversaries
Anniversaries.
- Which anniversaries fall on this date this year? provenance
- Which are round numbers? measurement
Planning Scheduling.
Countdown
Days until.
Countdown
Countdown.
- How many days until the next June 20? measurement
- From which date? definition
Work
Working day.
Work
Working day.
- Is it a working day for this organisation? provenance
- 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
June 20, day 171 (day 172 in leap years) of the year in the Gregorian calendar, with 194 days remaining in both common and leap years. June 20 is World Refugee Day and falls on or near the June solstice in some years.
Why it exists Filled
Let an agent handle June 20 as a calendar date with weekday computation, observances attributed to their traditions and sourced events.
Distinguishing features Filled
- The twentieth day of June
- 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
- Use a day for refugees to publish refugee data that identifies individuals.
- Present solstice timing as fixed on this date every year.
- Invent anniversaries for the date.
- Use the observance to promote a political claim as if endorsed by its organizers.
Only with a human decision
- Publishing material about identifiable refugees, even in support of them.
May
- State the date's position in the calendar and days remaining.
- Explain the observance on this date, citing the body that declared it.
Moral aspects Filled
- Refugees are exposed to danger when their identities or locations are published.
- Awareness days can be used to speak over the people they are about.
Who is affected
- Refugees and displaced people
- Aid organizations
- Audiences of campaigns
Owners Filled
Steward
Nobody: a calendar date held in common; the declaring international body defines the observance.
Links to other meta-models Filled
parent
- Q11187215 - registry parent class
related
- June - month
- June 19 - 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.june-20
- Wikidata: Q2666 (https://www.wikidata.org/wiki/Q2666)
- ISO 8601: --06-20 recurring date
Direct properties not applicable Not applicable
- day of year: 171 or 172 day - common year, leap year where different
- days remaining: 194 days
Plane XCT: no invented physical properties.
Recognition optional Filled
- Written 20 June or June 20
- ISO format --06-20
- 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
- Wikidata item Q2666: June 20 - identity and sense of the item
- Wikipedia: June 20 - 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
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q2666/spec.json