Tick, tock, tick, tock
Listen to the busy clock
Tick, tock, tick, tock
Just about to strike

1 - 2 - 3 - 4 - 5 - 6 -

7 - 8 - 9 - 10 - 11 - 12

References:

grandfather clock:
http://en.wikipedia.org/wiki/Grandfather_clock

Clock:
http://en.wikipedia.org/wiki/Clock

Sundial:
http://en.wikipedia.org/wiki/Sundial