For decades I've wanted to build a clock that would speed up and slow down at various times of the day. For example to give you a longer lunch by speeding up j

For decades I've wanted to build a clock that would speed up and slow down at various times of the day. For example to give you a longer lunch by speeding up just before lunchtime and slowing down when it's time to get back to work. The firmware would be trivial, but putting together the whole project was too much for me to get started.