Of course. Just use the trigger "the clock ticks" and set the Conditions appropriately.

`timeOfDay = 120000`

This will fire at noon. For every hour you could do something like:

`timeOfDay = 0 or timeOfDay = 010000 or timeOfDay = 020000` *...*

Or more easily:

`timeOfDay % 10000 = 0`

FYI, % is the "modulo" operator, which means "remainder after division". So, "timeOfDay divided by 10000 leaves a remainder of 0".