{second} {minute} {hour} {day} {month} {day-of-week}
To trigger once every five minutes:"schedule": "0 */5 * * * *"
To trigger once at the top of every hour:"schedule": "0 0 * * * *",
Azure Functions Overview | Microsoft Docscrontab.guru - the cron schedule expression editor
Cron - Wikipedia
┌───────────── minute (0 - 59) │ ┌───────────── hour (0 - 23) │ │ ┌───────────── day of month (1 - 31) │ │ │ ┌───────────── month (1 - 12) │ │ │ │ ┌───────────── day of week (0 - 6) (Sunday to Saturday; │ │ │ │ │ 7 is also Sunday) │ │ │ │ │ │ │ │ │ │ * * * * * command to execute
Azure Functions have 6 position, added position for seconds in front of minutes.
crontab.org - CRONTAB(5)