OK,

schedule for snap00000 has according to this these 15 entries to do a hourly snapshot from 06:00-21:00:

Weekly . at 06:00-07:00
Weekly . at 07:00-08:00
Weekly . at 08:00-09:00
Weekly . at 09:00-10:00
...
Weekly . at 20:00-21:00

Is this correct ? Did I understand it well?

Regards.