The SciFi Channel's schedulebot is still prelimiary, but they are listing what is airing on the Friday where SG1/SGA are pre-empted:
Friday, June 16 Dr. Who Marathon from 8pm to 2am
And of course, the SG1/SGA Marathons are scheduled for:
Friday, June 23 SG1 Season Nine Marathon from 7pm to 2am
Friday, June 30 SGA Season Two Marathon from 7pm to 2am
The episodes haven't been listed as yet.