Decode spreadsheet serial day numbers including the explicit non-Gregorian seria...
https://detect.halowerk.com/v1/F-TD2000-DOCUMENTS-01/xlsx-1900-1904-serial-day-fraction-compatibility-reconstructionOverview
Decode spreadsheet serial day numbers including the explicit non-Gregorian serial60 compatibility date.
Protocol
x402 (POST)
Price
$0.0030
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
detect
Source
bazaar
Indexed
2026-11-02 17:26:07
Health
Status
unknown
Latency (p50)
—
Uptime (30d)
—
Reliability Score
—
Last Checked
Never
Last Healthy
Never
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
—
Asset Verified
—
Facilitator
—
Input Schema
{
"body": {
"artifact": {
"spreadsheetDates": {
"claim": {
"dates": [
{
"date": "1900-01-01",
"gregorian": true,
"millisecond_of_day": 0,
"serial": 2
},
{
"date": "1900-02-28",
"gregorian": true,
"millisecond_of_day": 0,
"serial": 59
},
{
"date": "1900-02-29",
"gregorian": false,
"millisecond_of_day": 0,
"serial": 60
},
{
"date": "1900-03-01",
"gregorian": true,
"millisecond_of_day": 0,
"serial": 61
}
]
},
"data": {
"date1904": false,
"serials": [
1,
59,
60,
61
]
}
}
}
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Output Schema
{
"example": {
"billable": true,
"findings": [
{
"confidence": 1,
"evidence": [
{
"page_indices": [],
"page_url": null,
"pattern": "xlsx-1900-1904-serial-day-fraction-compatibility-reconstruction_scoped_evidence",
"type": "artifact"
}
],
"limits": [
"Caller-supplied decoded artifact only; stated bounded technical rules; no external lookup, legal judgment or trust certification."
],
"module": "xlsx-1900-1904-serial-day-fraction-compatibility-reconstruction",
"state": "observed",
"value": {
"claim_matches": false,
"computed": {
"dates": [
{
"date": "1900-01-01",
"gregorian": true,
"millisecond_of_day": 0,
"serial": 1
},
{
"date": "1900-02-28",
"gregorian": true,
"millisecond_of_day": 0,
"serial": 59
},
{
"date": "1900-02-29",
"gregorian": false,
"millisecond_of_day": 0,
"serial": 60
},
{
"date": "1900-03-01",
"gregorian": true,
"millisecond_of_day": 0,
"serial": 61
}
]
}
},
"warnings": []
}
],
"known_count": 1,
"scope": {
"contact_values_returned": false,
"network": false,
"supplied_artifact_only": true
},
"warnings": []
},
"type": "json"
}