January
Let an agent explain January, relay its calendar history, name origin, observances and seasonal associations from calendar and historical sources, and distinguish January from the start of other calendar years such as the lunar new year, from fiscal years and from months in other calendars.
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 explain January, relay its calendar history, name origin, observances and seasonal associations from calendar and historical sources, and distinguish January from the start of other calendar years such as the lunar new year, from fiscal years and from months in other calendars.
The first month of the year in the Julian and Gregorian calendars, with 31 days, named after the Roman god Janus of beginnings and doorways, added to the Roman calendar by tradition under Numa Pompilius and made the start of the civil year in Rome in 153 BCE; in the Northern Hemisphere it is typically midwinter, and it contains holidays such as New Year s Day on 1 January and Epiphany on 6 January.
What it is for: Not applicable; a calendar month.
It can be explain the month; relay history and name; describe observances; distinguish related calendar concepts.
Distinguishing features
First month
Named after Janus
Midwinter in the north
New Year observances
What it looks like
Not a visible object; a calendar period.
Physical character
days: 31 count
name origin: Latin Ianuarius, from Janus note
start of Roman civil year: 153 BCE note
position: 1st of 12 note
How it is recognised
First month of the Gregorian year
January, 31 days, named after Janus
Lunar New Year falls in January or February; fiscal years vary; other calendars have different first months
Related models
is a kind of - in registry terms
is named after -
contains -
is followed by -
In practice
Families and kinds
January in the Gregorian calendar
January in the Julian calendar
January observances such as New Year s Day and Epiphany
seasonal associations in both hemispheres
Standards and regulation
ISO 8601 month numbering
Failure modes and hazards
Confusing calendar systems
Assuming northern seasons globally
Confusing civil and fiscal years
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What January is.
Definition.
Definition
Definition.
Definition
Definition.
- What is January, and how does it differ from lunar new year periods, fiscal years and months in other calendars? definition
- Is the question about the calendar, history, observances or a specific date? boundary
Facts
Facts.
Facts
Facts.
- How many days does January have, and where does its name come from? definition
- Which entry fits the specific date? action
History History.
Sources.
Rome
Roman calendar.
Rome
Rome.
- How did January enter the Roman calendar and become the start of the year? provenance
- Which references are standard? provenance
Reforms
Calendar reforms.
Reforms
Reforms.
- How did the Julian and Gregorian reforms affect January? provenance
- Which sources are cited? provenance
Observances Observances.
Sources.
Holidays
Holidays.
Holidays
Holidays.
- What holidays fall in January around the world? provenance
- Which entry fits New Year s Day? action
Seasons
Seasons.
Seasons
Seasons.
- How does January differ between Northern and Southern Hemispheres? provenance
- Which entry fits winter? action
Context Culture.
Context.
Culture
Culture.
Culture
Culture.
- What customs such as resolutions are associated with January? provenance
- Which entry fits New Year s resolution? action
Language
Language.
Language
Language.
- How is January named in other languages? provenance
- Which entry fits month names? action
What the second pass must settle
- Should January observances be linked individually?
- How should calendar sources be linked?
- How should Julian and Gregorian dates be recorded?