It includes any game which you start or finish in an hour of realworld time IIRC - you better hurry! :)
Alas, I don't see much sense in it anyway. If you do it right, you can double two CDP boni plus game and scoring XPs but you need precise timing around midnight GMT and it lasts for 26 hours minimum. Thus the max XP score shown here is below 4000 in two days. I gain 4000+ just with CDP boni in four days without any hussle and sparing quite a few credits.