Cron expression for every 15 minutes during business hours

About */15 9-17 * * 1-5

*/15 9-17 * * 1-5 — Runs every 15 minutes between 9 AM and 5:59 PM, Monday through Friday.

Cron reads the five fields as minute hour day month weekday. For this schedule that breaks down as:

• */15 — minute
• 9-17 — hour
• * — day of month (every value)
• * — month (every value)
• 1-5 — day of week

Weekday & weekend schedules

• every weekday0 0 * * 1-5
• every weekday at 9am0 9 * * 1-5
• every weekday at 6pm0 18 * * 1-5
• every weekend0 0 * * 0,6

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