The CRON basics but super helpful

* * * * *
- - - - -
| | | | |
| | | | +---- Day of the week (0 - 7) [Both 0 and 7 represent Sunday]
| | | +------ Month (1 - 12)
| | +-------- Day of the month (1 - 31)
| +---------- Hour (0 - 23)
+------------ Minute (0 - 59)