month
Let an agent handle months by calendar, length, names and conversions, attributing religious and cultural calendars to their traditions.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent handle months by calendar, length, names and conversions, attributing religious and cultural calendars to their traditions.
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.
What it is for: Organising time for civil, religious and business use.
It can be find month lengths and names; convert dates between calendars; explain lunar and solar months; plan monthly schedules.
Distinguishing features
Calendar subdivision
Length varies by calendar
Names vary by language and culture
Linked to the Moon historically
What it looks like
Pages and columns in calendars.
Physical character
synodic month: about 29.53 days - lunar cycle
How it is recognised
Month names and numbers
Lunar versus solar months
A lunar cycle is an astronomical period
Related models
is a kind of - category
is part of - larger unit
is defined by - system
is related to - astronomy
In practice
Families and kinds
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
Standards and regulation
ISO 8601
Failure modes and hazards
Assuming all months have 30 days
Mixing calendars in conversions
Contract ambiguity about month ends
Also called
+17
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.month-time
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Calendar Which month.
Calendars differ.
System
Calendar system.
System
Calendar system.
- Which calendar is the month from? definition
- How long is it? measurement
Names
Month names.
Names
Month names.
- What is the month called in this language or calendar? provenance
- What is its origin? provenance
Conversion Between calendars.
Conversions need care.
Convert
Dates.
Convert
Conversion.
- Which Gregorian dates correspond to this month in another calendar? measurement
- Does the start depend on moon sighting? boundary
Religious
Observances.
Religious
Religious months.
- Which religious observances fall in this month, according to the community? provenance
- Are dates announced locally? provenance
Planning Scheduling.
Months shape schedules.
Length
Days.
Length
Month length.
- How many days does this month have this year? measurement
- Is it a leap year February? boundary
Contracts
Month ends.
Contracts
Contract months.
- How is a month counted in this contract or law? provenance
- What happens at month end? boundary
Astronomy Lunar cycle.
Months began with the Moon.
Lunar
Synodic month.
Lunar
Lunar month.
- How does the lunar cycle relate to calendar months? definition
- What are the types of astronomical months? definition
Awareness
Thematic months.
Awareness
Awareness months.
- Which awareness months are observed, and by whom? provenance
- Do they vary by country? boundary
What the second pass must settle
- Should each month be a separate entry?
- How should calendar conversions be linked?
- How should awareness months be handled?