Another of the occasional chances to see the International Space Station flying over London takes place this weekend.
Although the ISS is visible from London on quite a few passes, such as when it flies over France, it more rarely has a route that actually passes right over our heads, and also on a night when the clouds also get out of the way.
The weather forecast is 50:50 for clouds on Saturday night, and probably not a hope on Sunday.
Assuming that all is well, what you want to do is find a nice place with a decent view of the sky — a park, or anywhere above the local street lighting level will do.
It should become visible around about 6:27pm on Saturday 18th October, depending on how much of the horizon you can see, and pass right overhead at 6:32pm.
To see it, face directly to the West a couple of minutes before it is due to arrive to get used to the dark sky — then watch out for a single bright star flying in a straight line directly towards you and overheard. That’s the space station. It takes a moment to spot it, but once you do, it becomes very noticeable.
You should be able to watch it for a minute or two as it flies over.
Technically, the space station passes just inside the M25 barrier to qualify as “over London” for my purposes — but because of its height, it will appear to be right overhead from the ground, regardless of where you are in London.
Don’t forget to give the astronauts a wave as they fly over!
…a second pass takes place on Sunday, visible from around 7:15pm with overhead at 7:20pm.