Does anyone remember -- or does it still occur -- the one o'clock gun?
I remember the One o'clock gun Chris. We don't have it now.
Actually I have researched and there is quite a lot on the one o'clock gun on the net. It appears the actual gun was located in Birkenhead but the timing was controlled by the observatory in Bidston. See the following for various references:
Image courtesy of The Liverpool Time Ball and one o'clock gun
The gun's still there. It's in between the Seacombe Mersey and Irish Ferry terminals.