Ok, it's weird with the default snooze. The clock application doesn't give a rats *** about the global default snooze. It has it's own default snooze time stored somewhere. PM, however, uses the global default snooze which can be set with set_default_snooze and got with get_default_snooze.

If I have a PM set alarm with the sound explicitly set and I disable it, the clock application seems to set a snooze attribute with the value 0 for it.