← Back to catalogue
Published

month

vr.tr.month · thing-q5151

Let an agent handle months by calendar, length, names and conversions, attributing religious and cultural calendars to their traditions.

Thing Registry Information and virtual systems INF.KNW
Bundle → Layer → Finding → QuestionsClassifiersWhat it isWhy it existsDistinguishing featuresWhat robots and AI may and may not doMoral aspectsOwnersLinks to other meta-modelsIdentity and identifiersDirect propertiesRecognitionCapabilities and actionsHazards and failure modesStandards and interfacesContext of useSources

Bundle → Layer → Finding → Questions Filled

4 bundles · 8 layers · 8 findings · 16 questions

Calendar Which month.

System

Calendar system.

System

Calendar system.

  1. Which calendar is the month from? definition
  2. How long is it? measurement

Names

Month names.

Names

Month names.

  1. What is the month called in this language or calendar? provenance
  2. What is its origin? provenance
Conversion Between calendars.

Convert

Dates.

Convert

Conversion.

  1. Which Gregorian dates correspond to this month in another calendar? measurement
  2. Does the start depend on moon sighting? boundary

Religious

Observances.

Religious

Religious months.

  1. Which religious observances fall in this month, according to the community? provenance
  2. Are dates announced locally? provenance
Planning Scheduling.

Length

Days.

Length

Month length.

  1. How many days does this month have this year? measurement
  2. Is it a leap year February? boundary

Contracts

Month ends.

Contracts

Contract months.

  1. How is a month counted in this contract or law? provenance
  2. What happens at month end? boundary
Astronomy Lunar cycle.

Lunar

Synodic month.

Lunar

Lunar month.

  1. How does the lunar cycle relate to calendar months? definition
  2. What are the types of astronomical months? definition

Awareness

Thematic months.

Awareness

Awareness months.

  1. Which awareness months are observed, and by whom? provenance
  2. Do they vary by country? boundary

Classifiers Filled

Family
Thing Registry
Category
Information and virtual systems
Entry kind
thing
Plane
INF
Domain
INF.KNW
Other names and narrower kinds
Slavic names of the months, month of the Macedonian calendar, next month, thematic month, short month, month of the Afghan calendar, month of the Cherokee calendar, month of the Tibetan calendar, last month, hijri month of a given year, month of the Bhutanese calendar, winter month

What it is Filled

A unit of time used in calendars, roughly corresponding to the lunar cycle of about 29.5 days; the Gregorian calendar has 12 months of 28-31 days, and other calendars such as lunar, lunisolar and solar calendars define months differently.

Why it exists Filled

Let an agent handle months by calendar, length, names and conversions, attributing religious and cultural calendars to their traditions.

Distinguishing features Filled

  • Calendar subdivision
  • Length varies by calendar
  • Names vary by language and culture
  • Linked to the Moon historically

What robots and AI may and may not do Filled

Must not

  • Present a converted date as exact when calendars or local observations differ.
  • Miscalculate deadlines by assuming every month has the same length.
  • Treat one calendar's months as the only valid ones for religious observance.

Only with a human decision

  • Fixing a legal, religious or financial deadline that depends on how a month is counted.

May

  • Convert dates and months between calendars using recognised conversion rules.
  • State the length and name of a month in a given calendar.

Moral aspects Filled

  • Religious months often depend on observation and community authority.
  • Contract and payment terms measured in months can disadvantage people if counted wrongly.

Who is affected

  • Communities using lunar calendars
  • People bound by deadlines
  • Payers and payees

Owners Filled

Steward

Nobody owns the month; calendar authorities and religious bodies set their own calendars.

Links to other meta-models Filled

parent

  • Q12132 - registry parent class
  • Q138341612 - registry parent class

related

  • time interval and calendar unit - category
  • year - larger unit
  • calendar system - system
  • lunar phase - astronomy

What else AI and robots need to interact with it Filled

Identity and identifiers required Filled

  • Vercy registry: vr.tr.month
  • Wikidata: Q5151 (https://www.wikidata.org/wiki/Q5151)

Direct properties not applicable Not applicable

  • synodic month: about 29.53 days - lunar cycle

Plane INF: no invented physical properties.

Recognition optional Filled

  • Month names and numbers
  • Lunar versus solar months
  • A lunar cycle is an astronomical period
  • Pages and columns in calendars.

Capabilities and actions required Filled

  • find month lengths and names
  • convert dates between calendars
  • explain lunar and solar months
  • plan monthly schedules

Hazards and failure modes required Filled

  • Assuming all months have 30 days
  • Mixing calendars in conversions
  • Contract ambiguity about month ends

Standards and interfaces required Filled

  • ISO 8601

Context of use required Filled

  • Organising time for civil, religious and business use.
  • Gregorian months
  • lunar months such as in the Islamic calendar
  • lunisolar months such as in the Hebrew and Chinese calendars
  • solar months such as in the Persian calendar
  • thematic awareness months

Sources Filled

  1. Wikidata item Q5151: month - identity and sense of the item
  2. Wikipedia: Month - general description of the item

Open questions

  • Should each month be a separate entry?
  • How should calendar conversions be linked?
  • How should awareness months be handled?

Machine files

Card as JSON Specification Card backlog vercy.card/1

Provenance

thing registry research (pass 2) · unreviewed

Built from: models/things/publications/thing-q5151/spec.json