The following arrive and depart today January 2nd.
The following have arrived in Atlantis today:
Luke Skywalker
The following have left Atlantis today:
James Kirk
Kate Ashurst
Molly Hooper
Zane Donovan
Bodhi Rook
T'Pol
*keep in mind that with glitches, all your character knows ICly is that they didn't tell them they were leaving. Whether they chose to leave without saying anything or a glitch happened is purely for OOC knowledge.