Plays a sound at regular intervals.
Press nvda+alt+t, enter the desired values in the Hours, Minutes, and Seconds fields and click OK.
Press this combination again to turn off the timer.
Press nvda+alt+r to get the remaining time for the next playback.
Press nvda+control+f12 to get the current second in a minute.
All gestures you can configure in NVDA menu -> Preferences -> Input gestures... -> Audio timer.
Added translation and documentation.