✦ booting universe ✦
DevOps Tools
Visual cron syntax guide with 30+ expressions, category filters, search, and one-click copy. No sign-up required.
36 expressions
* * * * *
Every minute
In less than a minute
*/5 * * * *
Every 5 minutes
In 3 min — 06:20 AM
*/10 * * * *
Every 10 minutes
*/15 * * * *
Every 15 minutes
In 13 min — 06:30 AM
*/30 * * * *
Every 30 minutes
0 * * * *
Every hour (on the hour)
In 43 min — 07:00 AM
0 */2 * * *
Every 2 hours
In 1h — 08:00 AM
0 */6 * * *
Every 6 hours
In 5h — 12:00 PM
0 0 * * *
Every day at midnight
In 17h — 12:00 AM
0 12 * * *
Every day at noon
0 0 * * 0
Every Sunday at midnight
In 3d — Sun, Jul 26 12:00 AM
0 0 1 * *
First day of every month at midnight
Sat, Aug 1 12:00 AM
0 0 1 1 *
January 1st at midnight (yearly)
Fri, Jan 1 12:00 AM
0 4 * * *
Daily at 4 AM (maintenance window)
In 21h — 04:00 AM
0 3 * * 0
Sunday at 3 AM (weekly maintenance)
In 3d — Sun, Jul 26 03:00 AM
0 2 * * *
Daily at 2 AM (log rotation)
In 19h — 02:00 AM
0 9 * * 1-5
Weekdays at 9 AM (business open)
In 2h — 09:00 AM
0 17 * * 1-5
Weekdays at 5 PM (business close)
In 10h — 05:00 PM
0 9-17 * * 1-5
Every hour during business hours
30 8 * * 1-5
Weekdays at 8:30 AM (standup reminder)
In 2h — 08:30 AM
0 10 * * 1
Every Monday at 10 AM (weekly report)
In 5d — Mon, Jul 27 10:00 AM
0 0 1,15 * *
1st and 15th of month (payroll)
*/2 * * * *
Every 2 minutes (health check)
In 1 min — 06:18 AM
0 */4 * * *
Every 4 hours (SSL cert check)
0 1 * * *
Daily at 1 AM (deploy to staging)
In 18h — 01:00 AM
0 0 * * 5
Every Friday at midnight (weekly deploy)
In 1d — Fri, Jul 24 12:00 AM
*/30 9-17 * * 1-5
Every 30 min during work hours (monitoring)
0 3 * * *
Daily at 3 AM (database backup)
In 20h — 03:00 AM
0 2 * * 0
Sunday at 2 AM (full DB dump)
In 3d — Sun, Jul 26 02:00 AM
0 */12 * * *
Every 12 hours (incremental backup)
0 5 1 * *
Monthly at 5 AM (DB optimization)
Sat, Aug 1 05:00 AM
0 6 * * *
Daily at 6 AM (morning digest email)
In 23h — 06:00 AM
0 20 * * *
Daily at 8 PM (evening summary)
In 13h — 08:00 PM
0 0 25 12 *
Christmas Day at midnight
Fri, Dec 25 12:00 AM
0 0 14 2 *
Valentine's Day at midnight
Sun, Feb 14 12:00 AM
0 0 31 10 *
Halloween at midnight
Sat, Oct 31 12:00 AM
Build cron schedules visually with human-readable descriptions and next-run preview.
Complete Docker Compose reference with 50+ searchable directives and ready-to-use YAML templates.
Diagnose email delivery issues and auto-generate SPF, DKIM, DMARC fixes.
Searchable reference of all HTTP status codes with categories, descriptions, and use cases.
Tiny analytics breadcrumbs help us see which stars get visited most.
No personal data is sold or shared — we just count footsteps in the cosmos.