How to peek the next firings of a cron expression

1. Cron expression

   "Cron (5 fields)" accepts a classic 5-field cron string: `minute hour day-of-month month day-of-week`. Whitespace between fields is normalised. Six- or seven-field formats (with seconds or years) aren't parsed here.

2. How many

   "How many" defaults to 5 (max 24). Each row returned is the next scheduled time after `now`, expressed in UTC ISO format. Want server-local time? Convert downstream with your locale formatter.

3. Press Run

   Result returns `nexts` — an array of ISO timestamps. The previewer iterates one minute at a time so it works for any field combination, including `*/15 * * * *` or `0 9 1,15 * 1-5`.

4. What "now" means

   The reference time is the server clock when you press Run, not your local browser clock. If you need a different starting point, you'd need to fork the tool or use a real cron library that takes a `fromDate` argument.