The ARISS team will be supporting SSTV operations from the ISS during the period of Dec 26-31. The images will be related to lunar exploration. The transmissions should be available worldwide on 145.800 MHz. The planned mode is PD 120.
Planned start and stop times are currently listed as:
Start - Dec 26 about 18:25 UTC
Stop - Dec 31 about 17:05 UTC
After posting a copy of your image to our to https://www.spaceflightsoftware.com/ARISS_SSTV/ you can acquire a special award by going to https://ariss.pzk.org.pl/sstv/ and following the directions to receive a digital copy of your award.
**UPDATE Dec. 26**
Looks like the stop time got nudged a bit earlier
Stop - Dec 31 about 16:15 UTC