Please note that the third entry for a possible sighting of the ISS/STS listed for the 16 August should say the 17 August (in post #18).
There is a visual sighting opportunity for tonight, but the satellites will be low in the sky, and will be lit by the sun for a relatively short period (just under 5 minutes). This will make a sighing a little more difficult.
16 August 21:57:57 BST
Azimuth 278.3 degrees
Max Altitude 23 degrees
Pass Duration Total 0:09:12 – Visible for 0:04:50
They will rise above the London local horizon almost due west, then arc to a maximum altitude of 23 degrees above the horizon (that’s pretty low, for the non-technical) it will reach the top of that arc at compass bearing 211.1 degrees (between south west and south), and then begin to descend the arc and they will enter Earth’s shadow at 22:02:47 BST and at compass bearing 188.1 degrees (it will be come invisible mid-air) . They will continue along the descending arc and exit the local horizon at 22:06:22 BST and at compass bearing 141.2 degrees.
You will need to be in an open space to see this or in a high building, due to the low altitude pass on this occasion.
It’s best to get to your chosen location a little ahead of time, an orient yourself with the compass bearings etc.
Apologies about the short notice and I hope that those clouds to the south and south west get a shift on.
Good luck.
Best regards,
Paul.
EDIT: at this time the ISS and STS are approching the western coast of Mexico.
Edit No2: The ISS and STS are now directly over lakes Erie and Ontario.
Edit No3: The ISS and STS have just left the Canadian coast on their journey across the Atlantic.
Edit No4: Mid Atlantic, now.
Edit No5: Coming up over the London horizon, now.
Edit No6: I have a visual sighting
Edit No7: They have entered Earth's shadow and vanished.
Edit No8: The ISS and STS have gone down over the London horizon.
That was exciting! – we get our kicks in strange ways here at Cloud Base