There is a SSTV event planned for this weekend with images transmitted from the International Space Station on 437.550 MHz in Robot 36 mode.

See the ARISS website for more details: https://www.ariss.org/upcoming-sstv-events.html

The NASA “Spot the Station” website is also helpful for finding out when the ISS will pass over your QTH: https://www.nasa.gov/spot-the-station/