February 16
Let an agent handle February 16 as a calendar date with day number, weekday computation, observances and sourced historical events.
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 February 16 as a calendar date with day number, weekday computation, observances and sourced historical events.
The 47th day of the year in the Gregorian calendar, with 318 days remaining (319 in leap years); observed as an independence or restoration day in some countries, such as Lithuania State Restoration Day.
What it is for: A calendar date for scheduling, anniversaries and observances.
It can be compute its weekday in a given year; list observances; find sourced historical events; schedule events.
Distinguishing features
47th day of the year
Same day number in all years
Weekday varies by year
National observances in some states
What it looks like
A date on calendars.
Physical character
day of year: 47 day - Gregorian
days remaining: 318 or 319 days - common or leap year
How it is recognised
Written 16 February or February 16
ISO format --02-16
Specific years such as February 16, 1916 are separate
Related models
is part of - month
is a kind of - category
is observed as - observance
is expressed in - notation
In practice
Families and kinds
the recurring calendar date
specific dated days in given years
Identifiers
ISO 8601 --02-16 recurring date
Standards and regulation
ISO 8601
National public holiday laws
Failure modes and hazards
Date format confusion between day-month and month-day
Unsourced on-this-day events
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 February 16 fall in this year? measurement
- In which calendar? definition
Format
Notation.
Format
Date format.
- How should the date be written for this audience? action
- Is ISO format needed? boundary
Observances Holidays.
Some countries observe the date.
Holidays
Public holidays.
Holidays
Observances.
- Which countries observe a holiday on this date? provenance
- Is it a public holiday? provenance
Events
Ceremonies.
Events
Ceremonies.
- What official events mark it? provenance
- Where are schedules? provenance
History Past events.
Events need sources.
Events
On this day.
Events
Historical events.
- Which notable events happened on this date, according to reliable sources? provenance
- Are dates in the same calendar? boundary
Calendar change
Old style dates.
Calendar change
Old style dates.
- Was the event dated in the Julian calendar? boundary
- How is it converted? action
Planning Scheduling.
Dates drive plans.
Countdown
Days until.
Countdown
Countdown.
- How many days until the next February 16? measurement
- From which date? definition
Anniversaries
Recurring.
Anniversaries
Anniversaries.
- Which anniversaries fall on this date this year? provenance
- Which are round numbers? measurement
What the second pass must settle
- Should dated days be separate entries?
- How should observances be linked?
- How should events be sourced?