GPS relies on the most accurate timing devices we currently possess: atomic clocks.

It's a matter of mathematics and accurate timing of effort.

It was a launch which required extremely accurate timing and did not leave any room for error.

He did ten miles in fifty minutes by my watch, accurate timing and counting from one milestone to another.

Probably not melodies, for melodies are built up of notes that start or stop abruptly with accurate timing, unlike smells.