Example:
1. Backup on every day 01:30:

2. Backup on every Saturday 02:00 of weeks:

3. Backup on 1th of every months, at 00:30:

4. Backup on the end of every months, at 23:45:

5. Backup at every hour, such as 12:20,13:20¡­and so on:

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6. Backup at time Interval of 2 hours, begin from 00:00,  Such as 02:30, 04:30, 06:30 ?and so on:

7. Backup on every hour, at time Interval of 15 minutes,  Such as 12:15, 12:30, 12:45 ?and so on:

8. Backup at time Interval of 3 days, at 22:30,begin from today: