Cron next-run calculator — generate future times for bounded five-field POSIX cr
Cron next-run calculator — generate future times for bounded five-field POSIX cron schedules in IANA timezones with explicit daylight-saving (DST) policies.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
629 msmedian answer time
$0.005listed price per call
$0.005price 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
POST https://schedule-tools.use.x402atlas.com/cron-next
| Category | Everything else |
|---|---|
| Provider host | schedule-tools.use.x402atlas.com |
| Networks | eip155:137, eip155:42161, eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 3 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.005 | 629 ms |
Example input (from the provider)
{
"body": {
"after": "2024-03-28T12:00:00Z",
"ambiguous_time": "reject",
"count": 5,
"expression": "0 9 * * 1-5",
"nonexistent_time": "shift_forward",
"timezone": "Europe/London"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"after": {
"description": "Exclusive RFC3339 whole-second instant",
"format": "date-time",
"type": "string"
},
"ambiguous_time": {
"description": "Policy for a repeated generated civil minute",
"enum": [
"earlier",
"later",
"reject"
],
"type": "string"
},
"count": {
"description": "Number of future occurrences to return",
"maximum": 100,
"minimum": 1,
"type": "integer"
},
"expression": {
"description": "Five numeric POSIX fields; supports *, lists, ranges, and steps; */n retains wildcard DOM/DOW semantics and x/n expands through the field maximum",
"maxLength": 256,
"minLength": 9,
"type": "string"
},
"nonexistent_time": {
"description": "Policy for a skipped generated civil minute",
"enum": [
"reject",
"shift_forward"
],
"type": "string"
},
"timezone": {
"description": "UTC or IANA area/location name",
"maxLength": 128,
"minLength": 3,
"type": "string"
}
},
"required": [
"expression",
"timezone",
"after",
"count",
"ambiguous_time",
"nonexistent_time"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"_atlas": {
"additionalProperties": false,
"description": "Atlas documentation and related-route metadata added after deployment",
"properties": {
"docs": {
"description": "Documentation URL for this bridge",
"format": "uri",
"maxLength": 512,
"type": "string"
},
"related": {
"description": "Bounded related Atlas routes",
"items": {
"additionalProperties": false,
"description": "One related Atlas route",
"properties": {
"bridge": {
"description": "Related bridge name",
"maxLength": 64,
"type": "string"
},
"docs": {
"description": "Related bridge documentation URL",
"format": "uri",
"maxLength": 512,
"type": "string"
},
"summary": {
"description": "Short capability summary",
"maxLength": 256,
"type": "string"
},
"url": {
"description": "Related route URL",
"format": "uri",
"maxLength": 512,
"type": "string"
}
},
"required": [
"bridge",
"url",
"docs",
"summary"
],
"type": "object"
},
"maxItems": 3,
"type": "array"
}
},
"required": [
"docs"
],
"type": "object"
},
"after": {
"description": "Normalized exclusive lower-bound UTC instant",
"format": "date-time",
"type": "string"
},
"algorithm_version": {
"const": "schedule-v1",
"description": "Pinned POSIX cron and timezone-resolution contract",
"type": "string"
},
"ambiguous_time": {
"description": "Applied DST-fold policy",
"enum": [
"earlier",
"later",
"reject"
],
"type": "string"
},
"candidate_minutes_checked": {
"description": "Civil candidate minutes checked before producing the result",
"maximum": 2000000,
"minimum": 1,
"type": "integer"
},
"count": {
"description": "Requested and returned occurrence count",
"maximum": 100,
"minimum": 1,
"type": "integer"
},
"expression": {
"description": "Normalized five-field cron expression",
"type": "string"
},
"go_toolchain_version": {
"const": "go1.26.3",
"description": "Reviewed Go toolchain",
"type": "string"
},
"ian