Next occurrences of a cron expression in any IANA time zone, DST-aware via the r
Next occurrences of a cron expression in any IANA time zone, DST-aware via the runtime's ICU tzdb (times skipped by DST shift forward by the gap; ambiguous times fire once). Dialect (croner): 5-7 fields with optional seconds and year, ranges, steps, lists, JAN-DEC/SUN-SAT names, L, W, #, ? and @daily-style aliases. Each occurrence is returned as local ISO with offset plus UTC. Bad expression → 400 naming the offending field.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
19 msmedian answer time
$0.002listed price per call
$0.002price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://402utils.com/v1/cron-next
| Category | Everything else |
|---|---|
| Provider host | 402utils.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.002 | 19 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"count": 5,
"expr": "*/15 9-17 * * 1-5",
"tz": "Europe/Paris"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"description": "Query params. `expr` is required; the rest have defaults.",
"properties": {
"count": {
"description": "Occurrences to return, 1-50 (default 5).",
"type": "integer"
},
"expr": {
"description": "Cron expression, e.g. */15 9-17 * * 1-5.",
"type": "string"
},
"from": {
"description": "ISO 8601 start instant, exclusive (default now). Without an offset it is wall time in `tz`.",
"type": "string"
},
"tz": {
"description": "IANA zone for evaluation (default UTC).",
"type": "string"
}
},
"required": [
"expr"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"count": {
"description": "Number of occurrences actually returned.",
"type": "integer"
},
"expr": {
"type": "string"
},
"from": {
"description": "The start instant in `timezone`, ISO with offset.",
"type": "string"
},
"note": {
"description": "Present when fewer occurrences exist than requested.",
"type": "string"
},
"occurrences": {
"items": {
"properties": {
"local": {
"description": "ISO in `timezone`, with offset.",
"type": "string"
},
"utc": {
"type": "string"
}
},
"required": [
"local",
"utc"
],
"type": "object"
},
"type": "array"
},
"timezone": {
"type": "string"
}
},
"required": [
"expr",
"timezone",
"from",
"count",
"occurrences"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}