Zero-signup business-day date-math API: add days, count days between dates, is-business-day.
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Business-day date math. Three modes inferred from params: add (start+days -> the date N business days away, negative days = before), diff (start+end -> count of business days between, inclusive of both endpoints), is (date -> is it a business day). Optional weekend (default sat,sun) and holidays (comma list of YYYY-MM-DD you supply). No signup, no API key. Pure UTC date-only math; no time-of-day/DST/timezone.
End date YYYY-MM-DD (diff mode)
Date YYYY-MM-DD to test (is mode)
Business days to add (add mode); negative subtracts
Start date YYYY-MM-DD (add & diff modes)
Comma list of weekend days, e.g. "sat,sun" (default sat,sun)
Comma list of YYYY-MM-DD dates treated as non-working
Business-day date math. Three modes inferred from params: add (start+days -> the date N business days away, negative days = before), diff (start+end -> count of business days between, inclusive of both endpoints), is (date -> is it a business day). Optional weekend (default sat,sun) and holidays (comma list of YYYY-MM-DD you supply). No signup, no API key. Pure UTC date-only math; no time-of-day/DST/timezone.
| Argument | Type |
|---|
| Description |
|---|
| end | string | End date YYYY-MM-DD (diff mode) |
| date | string | Date YYYY-MM-DD to test (is mode) |
| days | integer | Business days to add (add mode); negative subtracts |
| start | string | Start date YYYY-MM-DD (add & diff modes) |
| weekend | string | Comma list of weekend days, e.g. "sat,sun" (default sat,sun) |
| holidays | string | Comma list of YYYY-MM-DD dates treated as non-working |
{
"type": "object",
"properties": {
"end": {
"type": "string",
"description": "End date YYYY-MM-DD (diff mode)"
},
"date": {
"type": "string",
"description": "Date YYYY-MM-DD to test (is mode)"
},
"days": {
"type": "integer",
"description": "Business days to add (add mode); negative subtracts"
},
"start": {
"type": "string",
"description": "Start date YYYY-MM-DD (add & diff modes)"
},
"weekend": {
"type": "string",
"description": "Comma list of weekend days, e.g. \"sat,sun\" (default sat,sun)"
},
"holidays": {
"type": "string",
"description": "Comma list of YYYY-MM-DD dates treated as non-working"
}
}
}