I live in Glasgow and the Leith via Glasgow record
had me scratching my head. Anyway, one hour from Leith to Glasgow.... Back in the sixties, I made the Glasgow to Edinburgh journey and back several times by train and I think it was about an hour then, or perhaps slightly less.
...They still fire off the one o'clock gun at Edinburgh castle, which is, if my memory serves me right, a throwback to the old days when the ships at Leith used this signal to check that they had the right time. You can hear it for miles.