Hourly Chime - Hourly chime adds a button to the "Date and Time" preference roll item. To access it, open up prefs, then go to the "Date and Time" item. You'll see a new button called "Hourly Chime". Tapping on it will bring up a view in which you can set the interval and chime sound. This package will also advance your clock an average of 40 seconds after each restart, to compensate for the newton's tendancy to slow the clock by the same amount each time the newton is restarted. (Thanks to Jason Grazado for the idea, and to Flash Sheridan for discovering the exact amount of time shift.)