“Over the next couple months, ARISS will be celebrating its 15th anniversary of continuous operations on the ISS. On November 13, 2000 the crew conducted their first ham radio contacts on ISS and on December 21, 2000 ARISS conducted their first school contact with the Burbank School in Burbank, Illinois.
An SSTV commemoration of these historic events is tentatively planned for mid to late December. It is possible that the transmission mode will be P120 instead of the P180 mode used in the past. This would allow for more pictures to be transmitted per pass.
Because preparations are not final it is suggested that you stay tuned to the AMSAT-BB and the AMSAT and ARISS web site for the latest information on this event and others that ARISS plans to conduct over the next few months to commemorate these historic events.”