Cron Expression: Every 15 Minutes (*/15 * * * *)
The expression */15 * * * * runs a job four times per hour, at :00, :15, :30, and :45. The step value in the minute field does the work while every other field remains a wildcard.
A quarter-hour cadence balances freshness against load nicely, which is why it is common for cache warming, log rotation, and scheduled syncs. The plain-English summary and live next runs appear below.
*/15 * * * *Every 15 minutes.
6/24/2026, 7:15:00 AM6/24/2026, 7:30:00 AM6/24/2026, 7:45:00 AM6/24/2026, 8:00:00 AM6/24/2026, 8:15:00 AM| Field | Value | Meaning |
|---|---|---|
Minute | */15 | 0, 15, 30, 45 |
Hour | * | every hour |
Day of month | * | every day |
Month | * | every month |
Day of week | * | every weekday |
*/15 * * * *→Runs at :00, :15, :30 and :45 — four times an hour.Equivalent to writing 0,15,30,45 * * * * explicitly.
Frequently asked questions
What times does */15 * * * * trigger?
At minute 0, 15, 30, and 45 of every hour. That is four runs an hour, or 96 per day.
Is */15 the same as 0,15,30,45?
Yes. The step form */15 expands to the explicit list 0,15,30,45, so both expressions produce identical schedules.
When should I use a 15-minute schedule?
It suits tasks that should feel fairly fresh but do not need minute-level immediacy, such as cache refreshes, metrics aggregation, or pulling updates from an external service.