Cron expression explained in plain English with the next run times in any time z
Cron expression explained in plain English with the next run times in any time zone - validates a 5-field cron and handles DST
Answeringour last check, 2026-10-18
1 of 1checks answered this week
288 msmedian answer time
$0.01listed price per call
$0.01price 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://saylorinnovations.com/api/cron/next
| Category | Everything else |
|---|---|
| Provider host | saylorinnovations.com |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| 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 |
|---|---|---|---|---|
| 2026-10-18 | valid payment request | 402 | $0.01 | 288 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"count": "3",
"expr": "30 9 * * mon-fri",
"from": "2026-10-12T12:00:00Z",
"tz": "America/New_York"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
],
"type": "string"
},
"queryParams": {
"properties": {
"count": {
"default": "5",
"description": "How many upcoming run times to return, 1 to 20 (default 5)",
"pattern": "^[0-9]{1,2}$",
"type": "string"
},
"expr": {
"description": "Standard 5-field cron (minute hour day-of-month month day-of-week) or @hourly, @daily, @weekly, @monthly, @yearly; names like mon-fri and jan are accepted",
"examples": [
"30 9 * * mon-fri",
"*/15 * * * *",
"@daily"
],
"type": "string"
},
"from": {
"description": "ISO 8601 instant to start from (default: now)",
"examples": [
"2026-10-12T12:00:00Z"
],
"type": "string"
},
"tz": {
"default": "UTC",
"description": "IANA time zone the schedule is evaluated in (default UTC)",
"examples": [
"America/New_York",
"Europe/London",
"Asia/Tokyo"
],
"type": "string"
}
},
"required": [
"expr"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"checked_at": {
"description": "Time the check was run (UTC)",
"type": [
"string",
"null"
]
},
"count": {
"description": "Number of run times returned",
"type": "number"
},
"description": {
"description": "Plain-English reading of the schedule",
"type": "string"
},
"expression": {
"description": "The normalised cron expression",
"type": "string"
},
"from": {
"description": "Start of the range",
"type": [
"string",
"null"
]
},
"next_runs": {
"description": "Upcoming run times in order",
"items": {
"properties": {
"local": {
"description": "Run time in the requested time zone",
"type": "string"
},
"utc": {
"description": "Run time in UTC (ISO 8601)",
"type": "string"
},
"weekday": {
"description": "Weekday of the local run time",
"type": "string"
}
},
"type": "object"
},
"type": "array"
},
"semantics": {
"type": [
"string",
"null"
]
},
"timezone": {
"description": "Time zone the schedule was evaluated in",
"type": "string"
}
},
"required": [
"expression",
"description",
"next_runs"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}