ISO 8601 week number and week-year for a date (2021-01-03 is 2020-W53), reverse ...
https://work-time-calc.x402tookit.com/iso-weekOverview
ISO 8601 week number and week-year for a date (2021-01-03 is 2020-W53), reverse lookup and sprint numbering.
Protocol
x402
Price
$0.02
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
Work Time Calc
Source
bazaar
Indexed
2026-10-20 21:22:40
Health
Status
healthy
Latency (p50)
512ms
Uptime (30d)
93.3%
Reliability Score
86.7/100
Last Checked
2026-10-28 06:42:32
Last Healthy
2026-10-28 06:42:32
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"date": "2021-01-03",
"sprintStart": "2020-12-14",
"sprintWeeks": 2
},
"type": "http"
}
Output Schema
{
"example": {
"asOf": "2026-10-11T23:39:14.006Z",
"calendarYear": 2021,
"dayOfYear": 3,
"degraded": false,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"isoWeekDate": "2020-W53-7",
"notChecked": [
"US, Middle East or other week-numbering systems (weeks starting Sunday or Saturday)",
"company fiscal calendars and 4-4-5 retail calendars",
"…1 more"
],
"reasons": [
"Week 1 is the week containing the first Thursday of the year; weeks run Monday to Sunday.",
"The date belongs to week-year 2020, not calendar year 2021, because its Thursday falls in 2020.",
"…1 more"
],
"source": "ISO 8601 week-date rules (weeks start Monday, week 1 holds the first Thursday), computed locally",
"sprint": {
"beforeSprintOne": false,
"dayOfSprint": 7,
"end": "2021-01-10",
"lengthDays": 14,
"number": 2,
"start": "2020-12-28"
},
"summary": "2021-01-03 is 2020-W53-7 (Sunday).",
"verdict": "COMPUTED",
"week": 53,
"weekMonday": "2020-12-28",
"weekSunday": "2021-01-03",
"weekYear": 2020,
"weekYearDiffersFromYear": true,
"weekday": 7,
"weekdayName": "Sunday",
"weeksInWeekYear": 53
},
"type": "json"
}