#### It should parse these ok but nothing more complex

`* * * * *` - Every minute.

`0 0 * * *` - At midnight every day.

`30 14 * * 5` - At 14:30 (2:30 PM) on every Friday.

`0 22 * * 1-5` - At 22:00 (10 PM) from Monday to Friday.

`*/5 * * * *` - Every 5 minutes.

`0 */2 * * *` - Every 2 hours.

`0 0 1 * *` - At midnight on the first day of every month.

`0 0 * 1 *` - At midnight every day in January.

`0 12 15 6 *` - At 12:00 (noon) on the 15th of June.

`0 9-17 * * *` - At the beginning of every hour from 09:00 (9 AM) to 17:00 (5 PM) every day.

`15 14 1 * *` - At 14:15 (2:15 PM) on the 1st day of every month.

`0 22 * * 7` - At 22:00 (10 PM) every Sunday.

`*/10 9-17 * * *` - Every 10 minutes from 09:00 (9 AM) to 17:00 (5 PM) every day.

`0 0 1 1 *` - At midnight on January 1st.

`45 23 31 12 *` - At 23:45 (11:45 PM) on December 31st.

`0 0 * * 0` - At midnight every Sunday.

`0 0 1-7 * 1` - At midnight on the first Monday of every month.

`*/15 14-18 * * 1-5` - Every 15 minutes from 14:00 (2 PM) to 18:00 (6 PM) on weekdays (Monday to Friday).

`30 6 */2 * *` - At 06:30 (6:30 AM) every 2 days.

`0 12 1 */2 *` - At 12:00 (noon) on the 1st day of every second month.

`0 4 2 1-3 *` - At 04:00 (4 AM) on the 2nd day of January, February, and March.

`0 2 29 2 *` - At 02:00 (2 AM) on February 29th (for leap years).

`*/20 * * * 0` - Every 20 minutes on Sundays.