---
title: "Tempo Cron Explorer on ChatGPT: ranks and changes · OpenApps"
description: "On Oct 29, 2026, Tempo Cron Explorer is an app on ChatGPT by Zovo, ranked #739 in Developer Tools."
url: https://theopenapps.com/chatgpt/apps/tempo-cron-explorer
---

> AI agents: this is one page of OpenApps as Markdown. https://theopenapps.com/llms.txt maps the site, the API and the MCP server.

# Tempo Cron Explorer

[Zovo](https://theopenapps.com/publishers/zovo) Developer Tools

ChatGPT Apps SDK New [Developer tools & IT](https://theopenapps.com/tags/developer-tools) [Developers](https://theopenapps.com/tags/for-developers)

Developer utility for explaining numeric five-field cron schedules and calculating upcoming runs after an explicit reference timestamp in an IANA timezone. See the matched values for each field, local times, UTC offsets, UTC instants, and a downloadable JSON report. Edit the schedule or try quarter-hour and weekday presets. Supports numeric wildcards, lists, ascending ranges, and steps. Sunday is 0 or 7\. Day-of-month and day-of-week use Vixie cron semantics: if either field begins with \*, both must match; otherwise either may match. This includes star-prefixed step expressions. The simulation skips nonexistent local times and returns both instances of repeated local times, making daylight-saving transitions visible. Scheduler dialects and runtime policies may differ. Limits: five numeric fields only, reference years 1970–2095, at most 20 occurrences, search horizon of 1,830 days. Partial results do not mean a schedule can never run. No month or weekday names, macros, seconds, years, ?, L, W, #, commands, job installation, execution, or monitoring.

[Open in ChatGPT](https://chatgpt.com/plugins/plugin%5Fasdk%5Fapp%5F6ad03038d02c819197530d0e644693f7?open%5Fin%5Fapp) [Website](https://cron-explorer.zovo.one)

[Top rank now #739 30 down · 1d Developer Tools](https://theopenapps.com/chatgpt/apps/tempo-cron-explorer?tab=ranks&slug=category%3Adeveloper-tools) [Peak (14d) #699 Developer Tools](https://theopenapps.com/chatgpt/apps/tempo-cron-explorer?tab=ranks&slug=category%3Adeveloper-tools)

First listed Oct 28, 2026

[Overview](https://theopenapps.com/chatgpt/apps/tempo-cron-explorer) [Ranks](https://theopenapps.com/chatgpt/apps/tempo-cron-explorer?tab=ranks) [Changes](https://theopenapps.com/chatgpt/apps/tempo-cron-explorer?tab=changes)

## Where it stands

[Developer Tools #739 30 down · 1d NEW to the chart Peak #699 in 14d](https://theopenapps.com/chatgpt/apps/tempo-cron-explorer?tab=ranks&slug=category%3Adeveloper-tools)

## Skills

* `cron-explorer`

## Starter prompts

* Find 3 cron runs for \*/15 \* \* \* \* after 2026-01-01T00:00:00Z in UTC.
* Find 3 cron runs for 30 1 \* \* \* after 2026-11-01T00:00:00Z in America/New\_York.
* Explain 0 9 1 \* 1 and find 3 runs after 2026-01-01T00:00:00Z in UTC.

## Details

Developer

[Zovo](https://theopenapps.com/publishers/zovo)

Category

Developer Tools

Kind

Apps SDK

Version

1.0.0

Sign-in

On install

Capabilities

Interactive, Read

Created

Oct 15

Website

[cron-explorer.zovo.one](https://cron-explorer.zovo.one)

Privacy

[cron-explorer.zovo.one](https://cron-explorer.zovo.one/privacy)

Listing ID

plugin\_asdk\_app\_6ad03038d02c819197530d0e644693f7

## Launch lag

13 d Oct 15 → Oct 28

## Badge

```markdown
[![Listed on OpenApps](https://theopenapps.com/badge/chatgpt/apps/tempo-cron-explorer.svg)](https://theopenapps.com/chatgpt/apps/tempo-cron-explorer)
```