April
Let an agent describe April as a calendar month, relay its length, position, seasons and notable observances, explain its name and history, and route date-specific questions to entries for individual days.
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 describe April as a calendar month, relay its length, position, seasons and notable observances, explain its name and history, and route date-specific questions to entries for individual days.
The fourth month of the year in the Julian and Gregorian calendars, with 30 days, following March and preceding May, falling in spring in the northern hemisphere and autumn in the southern, named from the Latin Aprilis of uncertain origin, and containing observances such as April Fools Day, Easter in many years, Earth Day on 22 April and many national holidays; the arrangement of its days by starting weekday, such as April starting on Monday, determines the calendar layout of the month.
What it is for: Not applicable; a calendar month.
It can be relay length and position; relay observances and seasons; explain name and history; route to specific days.
Distinguishing features
30 days
Spring month in the north
Easter often falls in April
April Fools Day
What it looks like
Not a visible object; a page of the calendar.
Physical character
days: 30 count
position: 4 month - Gregorian calendar
starts on same weekday as: July month - every year, and January in leap years
How it is recognised
Fourth month, 30 days
Between March and May, spring in the north
Aprilis in the Roman calendar was the second month
Related models
is a kind of - in registry terms
follows - the third month
precedes - the fifth month
contains - on 22 April
In practice
Families and kinds
April in the Gregorian and Julian calendars
April starting on each weekday as calendar layouts
April in other calendar traditions and names
observances in April
Identifiers
ISO 8601 04 month number
Standards and regulation
ISO 8601 date representation
National public holiday laws for April observances
Failure modes and hazards
Confusing observance dates across countries
Movable feasts such as Easter not always in April
Seasonal assumptions by hemisphere
Also called
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.
Calendar April in the calendar.
Reference.
Position
Position and length.
Position
Position.
- Where does April fall in the year, how long is it, and which weekday does it start on in a given year? definition
- Is the question about the Gregorian April or another calendar? boundary
Layout
Calendar layouts.
Layout
Layout.
- How do the seven layouts of April by starting weekday relate to other months? definition
- Which entry fits the specific day? action
Observances Observances.
Sources.
International
International days.
International
International.
- What international observances fall in April, such as Earth Day and World Health Day? provenance
- Which entry fits the specific observance? action
National
National and religious.
National
National.
- What national holidays and religious feasts commonly fall in April, with sources? provenance
- Which sources are cited? provenance
Seasons Seasons and nature.
Science.
Seasons
Seasons.
Seasons
Seasons.
- What is the season in April in each hemisphere, and what weather is typical? provenance
- Which entry fits spring? action
Astronomy
Astronomy.
Astronomy
Astronomy.
- What astronomical events such as the Lyrid meteor shower occur in April? provenance
- Which references are standard? provenance
Context Name and culture.
Context.
Name
Name and history.
Name
Name.
- Where does the name April come from, and how was it placed in Roman calendars? provenance
- Which entry fits the Roman calendar? action
Culture
Culture.
Culture
Culture.
- How does April appear in literature, proverbs and traditions such as April Fools Day? provenance
- Which entry fits April Fools Day? action
What the second pass must settle
- Should observances be linked through individual day entries?
- How should calendar layout aliases be recorded?
- How should names of April in other languages be recorded?