Cron next-run calculator — generate future times for bounded five-field POSIX cron schedul
Cron next-run calculator — generate future times for bounded five-field POSIX cron schedules in IANA timezones with explicit daylight-saving (DST) policies.
5000 (raw units)
price
3
calls / 30d
2
unique payers
2026-09-15
updated
Provider
schedule-tools.use.x402atlas.com · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "5000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "eip155:137",
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"amount": "5000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "eip155:42161",
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"amount": "5000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"category": "calendar",
"info": {
"input": {
"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"
},
"output": {
"example": {
"after": "2024-03-28T12:00:00Z",
"algorithm_version": "schedule-v1",
"ambiguous_time": "reject",
"candidate_minutes_checked": 11460,
"count": 5,
"expression": "0 9 * * 1-5",
"go_toolchain_version": "go1.26.3",
"iana_tzdata_version": "2026a",
"nonexistent_time": "shift_forward",
"occurrences": [
{
"local": {
"abbreviation": "GMT",
"local_time": "2024-03-29T09:00:00+00:00",
"offset_seconds": 0,
"timezone": "Europe/London"
},
"utc": "2024-03-29T09:00:00Z"
},
{
"local": {
"abbreviation": "BST",
"local_time": "2024-04-01T09:00:00+01:00",
"offset_seconds": 3600,
"timezone": "Europe/London"
},
"utc": "2024-04-01T08:00:00Z"
},
{
"local": {
"abbreviation": "BST",
"local_time": "2024-04-02T09:00:00+01:00",
"offset_seconds": 3600,
"timezone": "Europe/London"
},
"utc": "2024-04-02T08:00:00Z"
},
{
"local": {
"abbreviation": "BST",
"local_time": "2024-04-03T09:00:00+01:00",
"offset_seconds": 3600,
"timezone": "Europe/London"
},
"utc": "2024-04-03T08:00:00Z"
},
{
"local": {
"abbreviation": "BST",
"local_time": "2024-04-04T09:00:00+01:00",
"offset_seconds": 3600,
"timezone": "Europe/London"
},
"utc": "2024-04-04T08:00:00Z"
}
],
"operation": "cron-next",
"timezone": "Europe/London",
"tzdata_source": "bridge-embedded",
"warnings": []
},
"type": "json"
}
},
"schema": {
"$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"
},
"iana_tzdata_version": {
"const": "2026a",
"description": "Reviewed IANA timezone release",
"type": "string"
},
"nonexistent_time": {
"description": "Applied DST-gap policy",
"enum": [
"reject",
"shift_forward"
],
"type": "string"
},
"occurrences": {
"description": "Requested occurrences in ascending instant order",
"items": {
"additionalProperties": false,
"description": "One resolved scheduled occurrence",
"properties": {
"local": {
"additionalProperties": false,
"description": "Localized representation",
"properties": {
"abbreviation": {
"description": "Display-only abbreviation",
"type": "string"
},
"local_time": {
"description": "RFC3339 local form with numeric offset",
"format": "date-time",
"type": "string"
},
"offset_seconds": {
"description": "UTC offset seconds",
"maximum": 86400,
"minimum": -86400,
"type": "integer"
},
"timezone": {
"description": "IANA timezone",
"type": "string"
}
},
"required": [
"local_time",
"timezone",
"offset_seconds",
"abbreviation"
],
"type": "object"
},
"utc": {
"description": "UTC instant",
"format": "date-time",
"type": "string"
}
},
"required": [
"utc",
"local"
],
"type": "object"
},
"maxItems": 100,
"minItems": 1,
"type": "array"
},
"operation": {
"const": "cron-next",
"description": "Stable route operation",
"type": "string"
},
"timezone": {
"description": "IANA timezone used for civil matching",
"type": "string"
},
"tzdata_source": {
"const": "bridge-embedded",
"description": "Timezone data source",
"type": "string"
},
"warnings": {
"description": "Distinct DST gap shift warnings; [] when no shift occurred",
"items": {
"description": "Warning",
"type": "string"
},
"maxItems": 100,
"type": "array"
}
},
"required": [
"operation",
"algorithm_version",
"tzdata_source",
"go_toolchain_version",
"iana_tzdata_version",
"expression",
"timezone",
"after",
"count",
"ambiguous_time",
"nonexistent_time",
"candidate_minutes_checked",
"occurrences",
"warnings"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
},
"tags": [
"cron-next",
"cron-schedule",
"iana-timezone",
"dst",
"scheduling"
]
}
}Use it
curl
curl "https://schedule-tools.use.x402atlas.com/cron-next" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://schedule-tools.use.x402atlas.com/cron-next");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://schedule-tools.use.x402atlas.com/cron-next")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/4483.json, and this resource appears in /discovery/resources and /discovery/search.