There is also a PDF file so you can print it, and work it out on paper. Twice a year, in Spring and Autumn, the Sun's path across the sky is very close to that of the arc of geo-stationary communications satellites. As the Sun is a wideband radio source, satellite receivers will suffer a much higher background noise level for the few minutes the Sun is in view of their dish, to the extent that communications can be severely disrupted. The tables on this page show the time and date that the Sun will go behind each of the major TV satellites for several towns around the UK, also when several cities around the world will lose their feed of BBC World Service television. Time, and Timecode Dates of the Summer Time changes, why we have leap-seconds, and information about Timecode.
Webcams There are an increasing number of live webcams around the world.
I have linked directly to a few of the cameras on this page, together with links to other more comprehensive lists.