February 1
Let an agent handle February 1 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 February 1 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 February 1 a public holiday or observance here? provenance
- Which tradition or law sets it? provenance
Attribution
Traditions.
Attribution
Attributed observances.
- Which 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 February 1, 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 February 1? 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
February 1, day 32 of the year in the Gregorian calendar, with 333 days remaining (334 in leap years). Observances on this date vary by country and tradition; in some Celtic traditions it is associated with Imbolc and Saint Brigid.
Why it exists Filled
Let an agent handle February 1 as a calendar date with weekday computation, observances attributed to their traditions and sourced events.
Distinguishing features Filled
- The first day of February
- 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 one country's observance as universal.
- Attribute events to the date without a source.
- Confuse calendar systems when dating events.
Only with a human decision
- Changing legal or contractual deadlines tied to the date.
May
- State calendar facts about February 1 and the observances linked to it, citing sources.
- Note when observances on the date differ between countries.
Moral aspects Filled
- Holidays and commemorations matter to the communities that keep them.
- Errors in dates mislead historical and legal records.
Who is affected
- Communities that observe holidays
- Readers of records
Owners Filled
Steward
Nobody: a calendar date held in common.
Links to other meta-models Filled
parent
- Q11186375 - registry parent class
related
- February - month
- January 31 - 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.february-1
- Wikidata: Q2312 (https://www.wikidata.org/wiki/Q2312)
- ISO 8601: --02-01 recurring date
Direct properties not applicable Not applicable
- day of year: 32 day
- days remaining: 333 or 334 days - common or leap year
Plane XCT: no invented physical properties.
Recognition optional Filled
- Written 1 February or February 1
- ISO format --02-01
- 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 religious 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 Q2312: February 1 - identity and sense of the item
- Wikipedia: February 1 - 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-q2312/spec.json