November 9
Let an agent handle November 9 as a calendar date with day number, weekday computation, observances and carefully sourced, respectful historical context.
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 November 9 as a calendar date with day number, weekday computation, observances and carefully sourced, respectful historical context.
The 313th day of the year in the Gregorian calendar (314th in leap years), with 52 days remaining; a date of several turning points in German history, including the 1918 proclamation of the republic, the 1938 November pogroms and the 1989 opening of the Berlin Wall.
What it is for: A calendar date for scheduling, remembrance and observances.
It can be compute its weekday in a given year; find remembrance events; cite sourced historical events; schedule events.
Distinguishing features
Several major events in German history
Remembrance of the 1938 November pogroms
Anniversary of the Berlin Wall opening
Weekday varies by year
What it looks like
A date on calendars.
Physical character
day of year: 313 or 314 day - common or leap year
days remaining: 52 days
How it is recognised
Written 9 November or November 9
ISO format --11-09
Known in Germany as Schicksalstag (day of fate)
Related models
is part of - month
is a kind of - category
is linked to - context
is expressed in - notation
In practice
Families and kinds
the recurring calendar date
specific dated days in given years
Identifiers
ISO 8601 --11-09 recurring date
Standards and regulation
ISO 8601
Failure modes and hazards
Trivialising remembrance
Unsourced or distorted history
Day-month order confusion
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.
Date Calendar facts.
Calendar arithmetic.
Weekday
Computation.
Weekday
Weekday.
- On which weekday does November 9 fall in this year? measurement
- Is it a leap year? boundary
Format
Notation.
Format
Date format.
- How should the date be written for this audience? action
- Is ISO format needed? boundary
History German history.
History must be sourced and respectful.
Events
Turning points.
Events
Historical events.
- Which events are associated with this date, according to reliable historians? provenance
- Is the context accurate? boundary
Remembrance
November pogroms.
Remembrance
Remembrance.
- How is the 1938 pogrom remembered, and by which institutions? provenance
- Is the tone respectful? boundary
Observances Commemorations.
The date is commemorated.
Events
Ceremonies.
Events
Commemorations.
- Which commemorations take place on this date? provenance
- Where? provenance
Status
Holiday or not.
Status
Holiday status.
- Is it a public holiday anywhere? provenance
- Why was it not chosen as a German national day? provenance
Planning Scheduling.
Dates drive plans.
Sensitivity
Scheduling care.
Sensitivity
Scheduling sensitivity.
- Could scheduling a celebration on this date be insensitive here? boundary
- Which remembrance events coincide? provenance
Countdown
Days until.
Countdown
Countdown.
- How many days until the next November 9? measurement
- From which date? definition
What the second pass must settle
- Should the German history events be separate linked entries?
- How should remembrance events be linked?
- How should events be sourced?