You guys beat me to it but I've been preparing some information on the SSTV event from the ISS. I've put together a how-to video for using free software with a simple SDR receiver (SDRplay or RTL-SDR) and a vertical antenna. You may be surprised at how well the setup works. Best of all you can leave it unmonitored and go to sleep, work, etc. then come back later and see what images you decoded.
Here is a video from the first ISS pass earlier today. I've also attached the images I received.
And a more detailed video I made yesterday on the software setup:
If anyone has any questions on this or requests for future videos please let me know.
73 and Merry Christmas!