December 26
Let an agent handle December 26 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 December 26 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 December 26 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 December 26, 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 December 26? 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
December 26, day 360 (day 361 in leap years) of the year in the Gregorian calendar, with 5 days remaining in both common and leap years. December 26 is observed as Boxing Day in the United Kingdom and many Commonwealth countries and as Saint Stephen Day in many Christian traditions, and is the first day of Kwanzaa; other observances vary by country and tradition.
Why it exists Filled
Let an agent handle December 26 as a calendar date with weekday computation, observances attributed to their traditions and sourced events.
Distinguishing features Filled
- The twenty-sixth day of December
- 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
- State that December 26 is a public holiday in a country where it is not.
- Invent events or birthdays for this date.
- Treat the 2004 Indian Ocean tsunami anniversary lightly.
Only with a human decision
- Scheduling work or deliveries for staff entitled to a holiday.
May
- Calculate dates and intervals involving December 26.
- Explain Boxing Day, St Stephen's Day and their public holiday status by country.
Moral aspects Filled
- Holiday rules affect workers' pay and rest.
- The date marks a disaster that killed many people.
Who is affected
- Workers
- Families of disaster victims
Owners Filled
Steward
Nobody: a calendar date; national governments set public holidays.
Links to other meta-models Filled
parent
- Q11187341 - registry parent class
related
- December - month
- December 25 - 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.december-26
- Wikidata: Q2761 (https://www.wikidata.org/wiki/Q2761)
- ISO 8601: --12-26 recurring date
Direct properties not applicable Not applicable
- day of year: 360 or 361 day - common year, leap year where different
- days remaining: 5 days
Plane XCT: no invented physical properties.
Recognition optional Filled
- Written 26 December or December 26
- ISO format --12-26
- 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 Q2761: December 26 - identity and sense of the item
- Wikipedia: December 26 - 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-q2761/spec.json