week
Let an agent handle weeks with their start day and numbering convention, and resolve relative expressions such as this week and next week.
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 weeks with their start day and numbering convention, and resolve relative expressions such as this week and next week.
A period of seven consecutive days, used as a cycle for work, rest and scheduling, with numbering conventions such as ISO 8601 weeks.
What it is for: Organising work, rest, schedules and reporting in a seven-day cycle.
It can be number it, under ISO 8601 or local conventions; schedule by it; resolve relative references, such as next week; designate themed weeks, such as an awareness week.
Distinguishing features
Seven days, not tied to astronomy
Start day differs: Monday in ISO 8601, Sunday in some countries
Week numbering differs between conventions
Themed weeks and intercalary weeks are special uses
What it looks like
Not visible; shown as rows in calendars and week numbers.
Physical character
length: 7 days
ISO weeks per year: 52 or 53 weeks
How it is recognised
Calendar rows of seven days
Week numbers such as 2026-W37
Phrases such as this week or next week, which depend on the reference date
Related models
is made of - seven days
is part of - weeks in a year
is a kind of - a unit of time
is confused with - fewer days
In practice
Families and kinds
calendar week
ISO week
working week
themed or international weeks
intercalary weeks in some calendars
Identifiers
ISO week date YYYY-Www-D ISO 8601 week date
Standards and regulation
ISO 8601 week dates
Working time law defining working weeks
Failure modes and hazards
Different week start days causing off-by-one errors
Week 53 and year-boundary errors
Ambiguous relative expressions
Also called
+27
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.week-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.
Convention Start day and numbering.
Conventions decide which days belong to which week.
Start day
Monday or Sunday.
Start day
The first day of the week.
- Which day starts the week here? definition
- Does the context use ISO 8601? provenance
Numbering
ISO or local week numbers.
Week number
The numbering scheme.
- Which week number is this, under which scheme? measurement
- Does the year have 53 weeks? boundary
Relative references This week, next week.
Relative expressions need a reference date.
Reference date
Anchor.
Anchor
The date relative expressions refer to.
- Relative to which date is next week meant? definition
- In which time zone? boundary
Resolution
Mapping to dates.
Resolved range
The dates covered.
- Which exact dates does this expression cover? measurement
- How should ambiguity be confirmed with the user? action
Work and law Working weeks.
Working time rules use weeks.
Working week
Days and hours.
Working week
Working days and hours.
- Which days are working days here? definition
- What maximum weekly hours apply? boundary
Holidays
Public holidays in the week.
Holidays
Holidays affecting the week.
- Which public holidays fall in this week? provenance
- How do they affect deadlines? boundary
Designated weeks Themed and special weeks.
Named weeks carry their own dates.
Themed weeks
Awareness and events.
Designation
Who designated the week.
- Who designated this week, and for what? provenance
- Do its dates change each year? boundary
Calendar systems
Intercalary weeks.
Calendar
Special weeks in calendars.
- Does the calendar insert an extra week? definition
- How is it numbered? definition
What the second pass must settle
- Should the working week be a separate entry?
- How should relative week expressions be resolved and recorded?
- The registry entry has merged aliases naming specific weeks; should they be split off?