Clock/timer that updates every 2 seconds

Hi there Im not that great with expressions…. and I need clock/timer that counts up in clock format but only updates every 2 seconds

e.g.

20 being hours / 56 minutes / 18 seconds

20:56:18

20:56:20

20:56:22

20:56:24

can any one help or at least point me in the right direction?

Thanks Matu

Hello. Just add on first line in your expression

posterizeTime(0.5);