December
Let an agent explain December as a calendar month, relay length, position, astronomy, etymology and common observances from calendar and cultural sources, and distinguish December from the December solstice, the holiday season as a cultural period and months in other calendars, noting that observances vary by country and year.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Understand What December is.
Definition
Definition.
Definition
Definition.
- What is December, and how does it relate to the December solstice, the holiday season and months in other calendars? definition
- Is the question about dates, seasons, holidays or etymology? boundary
Days
Days of December.
Days
Days.
- Which days of December have entries, and what day-of-year numbers do they have? measurement
- Which entry fits the specific day? action
Astronomy Astronomy and seasons.
Solstice
Solstice.
Solstice
Solstice.
- Why does the December solstice fall around 21 or 22 December? provenance
- Which references are standard? provenance
Seasons
Seasons.
Seasons
Seasons.
- How does December differ between hemispheres? provenance
- Which sources are cited? provenance
Culture Observances.
Holidays
Holidays.
Holidays
Holidays.
- Which holidays fall in December, including Christmas, Hanukkah in many years and New Year s Eve? provenance
- Which entry fits Christmas? action
Human rights
Human Rights Day.
Human rights
Human rights.
- What does Human Rights Day on 10 December commemorate? provenance
- Which entry fits Universal Declaration of Human Rights? action
Context Calendar history.
Roman
Roman calendar.
Roman
Roman.
- Why is December named for ten, and what was Saturnalia? provenance
- Which entry fits Saturnalia? action
Year end
Year end.
Year end
Year end.
- How do cultures mark the end of the calendar year? provenance
- Which entry fits New Year s Eve? action
Classifiers Filled
- Family
- Thing Registry
- Category
- Information and virtual systems
- Entry kind
- thing
- Plane
- INF
- Domain
- INF.KNW
What it is Filled
The twelfth and last month of the year in the Julian and Gregorian calendars, with 31 days, running from day 335 to day 365 in common years and from day 336 to day 366 in leap years, named from Latin decem, ten, because it was the tenth month of the early Roman calendar, containing the December solstice around 21 or 22 December in the Gregorian calendar, with a different date in the contemporary Julian calendar, marking the start of astronomical winter in the Northern Hemisphere and summer in the Southern Hemisphere, and including observances such as Human Rights Day on 10 December, Christmas on 25 December, New Year's Eve on 31 December and in many years Hanukkah, whose dates follow the Hebrew calendar.
Why it exists Filled
Let an agent explain December as a calendar month, relay length, position, astronomy, etymology and common observances from calendar and cultural sources, and distinguish December from the December solstice, the holiday season as a cultural period and months in other calendars, noting that observances vary by country and year.
Distinguishing features Filled
- Last month
- Contains a solstice
- Name from tenth Roman month
- Major holidays
What robots and AI may and may not do Filled
Must not
- Assume December is winter everywhere.
- State lunisolar holidays such as Hanukkah as falling on fixed Gregorian dates.
- Assume that everyone celebrates Christmas or present it as universal.
- Ignore Julian-calendar churches that celebrate Christmas on another date.
Only with a human decision
- Setting end-of-year deadlines that affect people of several faiths and countries.
May
- Compute dates, durations and day numbers in December for the Gregorian or Julian calendar.
- List December holidays with their tradition and note when lunar or lunisolar dates shift.
Moral aspects Filled
- Assuming one religious calendar excludes people who observe other traditions.
Who is affected
- People of different faiths
- Workers on holiday shifts
Owners Filled
Steward
Nobody owns it; it is part of the civil calendar.
Links to other meta-models Filled
parent
- Q18602249 - registry parent class
related
- month of the Gregorian calendar - in registry terms
- November
- January - of the next year
contains
- December solstice
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.december
- Wikidata: Q126 (https://www.wikidata.org/wiki/Q126)
Direct properties not applicable Not applicable
- days: 31 count
- day of year range: 335-365 in common years, 336-366 in leap years note
- solstice: around 21 or 22 December date - varies by year and time zone
- ISO 8601 number: 12 code
Plane INF: no invented physical properties.
Recognition optional Filled
- Twelfth month of the Gregorian calendar
- December, Dec
- The December solstice is an astronomical event; the holiday season spans several weeks; other calendars differ
- Not a visible object; a calendar period.
Capabilities and actions required Filled
- explain position and length
- relay astronomy and etymology
- describe observances
- distinguish related concepts
Hazards and failure modes required Filled
- Assuming winter everywhere
- Stating lunisolar holidays such as Hanukkah as fixed
- Assuming everyone celebrates Christmas
Standards and interfaces required Filled
- ISO 8601 date representation
- National public holiday laws
Context of use required Filled
- Organising time within the year.
- days of December
- December observances
- December in different hemispheres
Sources Filled
- Wikidata item Q126: December - identity and sense of the item
- Wikipedia: December - general description of the item
Open questions
- Should observances be linked individually?
- How should calendar sources be linked?
- How should moveable holidays be recorded?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q126/spec.json