May 4
Let an agent handle May 4 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 May 4 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 May 4 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 May 4, 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 May 4? 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
May 4, day 124 (day 125 in leap years) of the year in the Gregorian calendar, with 241 days remaining in both common and leap years. Observances on this date vary by country and tradition; it is Youth Day in China and is marked informally by fans as Star Wars Day.
Why it exists Filled
Let an agent handle May 4 as a calendar date with weekday computation, observances attributed to their traditions and sourced events.
Distinguishing features Filled
- The fourth day of May
- 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 an informal fan day on May 4 as an official holiday.
- Describe the history behind Youth Day in China in a partisan way without sources.
- Attach unsourced births, deaths or events to May 4.
- Treat national commemorations on May 4 as trivia when they mark deaths or suffering.
Only with a human decision
- Fixing May 4 as a legal or contractual date on someone's behalf.
May
- State that May 4 is day 124 of a common year and day 125 of a leap year.
- Mention Youth Day in China and the informal Star Wars Day as distinct kinds of observance.
- List events on May 4 only with sources and calendar system stated.
Moral aspects Filled
- May 4 carries political memory in several countries; flattening it into trivia disrespects those who remember it.
- Mixing official and fan observances confuses readers.
Who is affected
- Readers and students
- People who commemorate the date
- Fans
Owners Filled
Steward
Nobody: a calendar date held in common.
Links to other meta-models Filled
parent
- Q11187901 - registry parent class
related
- May - month
- May 3 - 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.may-4
- Wikidata: Q2549 (https://www.wikidata.org/wiki/Q2549)
- ISO 8601: --05-04 recurring date
Direct properties not applicable Not applicable
- day of year: 124 or 125 day - common year, leap year where different
- days remaining: 241 days
Plane XCT: no invented physical properties.
Recognition optional Filled
- Written 4 May or May 4
- ISO format --05-04
- 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 Q2549: May 4 - identity and sense of the item
- Wikipedia: May 4 - 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-q2549/spec.json