Playing with Shutter Speed

So the last two nights Auckland has been blessed with amazing sunsets, and a brilliant cloud formation which someone on facebook kindly informed me is called "Cirrus" clouds.  So I had a play tonight with slow shutter speeds - who thought clouds could move so far in just 30 seconds??

Taken 8:21pm.  F22, 0.4 shutter (no editing) 

Taken 9:11pm.  F13, 30" shutter (no editing)