TimerCron

id: py-TimerCron

Recurring timer driven by a cron expression.

Property	Type	Description
`Expression`	`str`	Cron expression (e.g., `"0 0 * * *"` for daily at midnight)
`Payload`	`any`	Data passed to the timer callback
`StartAt`	`DateTime`	Optional — delay first execution until this time

{
    "Expression": "0 */6 * * *",   # Every 6 hours
    "Payload": {"jobType": "sync"},
    "StartAt": DateTime.now().plus_hours(1)
}