I heard them again this morning.

It wasn’t as loud as before. It sounded more like the rising downpour of a storm - heavy raindrops pattering leaves and concrete, or the gentle hiss of a distant passing train. In fact, I would have thought it either of these if it had lasted more than 10 seconds and we were anywhere near a train track.

It was exactly 7:15 this morning - the hushed clatter of scores of carriages moving past my window.

If anyone has a normal, boring, everyday tellurian and uninteresting explaination, I’d be quite happy to entertain it.