Hourly beeps during your working shift with a lunch break.

Have you heard about old Cuckoo Clock?
Program features corresponds to its name. Who knows - Zozulya is Ukrainian pronunciation of Cuckoo.

Many people especially on their job have something to do according to start some time interval.
The application is oriented on these people and they can use it as hourly beeper. You can set start-end shift time and Cuckoo will beat off time intervals inside.
And what is the job without "quiet hour" - you can set quiet interval inside work time when Cuckoo will be silent.

Cuckoo Hourly Signal Beeper.