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ISO Week Date & Calendar Decomposition
x402
ISO Week Date & Calendar Decomposition is a paid API for AI agents from api.24klabs.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Converts a date into its ISO 8601 week-date components (year, week number, weekday), ordinal day-of-year, quarter, and days remaining in the year.
Price / call$0.001
Success—
StatusUnknown
How this service works
Convert a date to its ISO 8601 week-date (year, week number, weekday), ordinal day-of-year, quarter, and days remaining in the year.
Output
Returns the ISO 8601 week-date year, week number (1–53), ISO weekday (1=Monday through 7=Sunday), ordinal day-of-year (1–366), calendar quarter (1–4), and the number of days remaining in the year for the given input date.
Example use cases
Fiscal week reporting automation
“I need to tag this week's sales report with the correct ISO week number and quarter — the report date is Monday, January 13, 2025. Can you get me the ISO week year, week number, weekday, quarter, and days left in the year?”
Project deadline week lookup
“Our project deadline is July 18, 2025. What ISO 8601 week-date components does that fall on — week number, weekday, quarter, ordinal day, and how many days are left in the year?”
Year-end countdown for a scheduling tool
“I'm building a scheduling dashboard and need to show users how many days remain in the year for today's date, December 5, 2025, along with the ISO week number and quarter.”
Technical details
Endpoint
POSThttps://api.24klabs.ai/api/v1/iso-week-dateWhen to prefer
Choose this endpoint when you need ISO 8601 week-date decomposition all in one call — especially when you need week number, quarter, ordinal day, and year-remaining together without writing your own calendar logic. Ideal for agents handling reporting periods, project scheduling, fiscal calendar tagging, or any workflow that requires ISO-standard week numbering rather than simple day-of-week.
Side effects
- Invalid or unparseable date string returns a 4xx error
- Missing date parameter causes a validation error
- Dates outside supported calendar range may return an error
- Ambiguous date formats (e.g. 01/02/03) may be rejected or misinterpreted
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| date | string |
Output
Schema · Response
{
"type": "json",
"example": {
"iso_week": 31,
"iso_year": 2026,
"iso_weekday": 1
}
}Tags
x402
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