Yeah Fingertip, Bogey's right. I found this out first hand. Even though your score history shows you played at least one round per day, you'll still need to play in your specific time zone in order to receive the CDP points. This makes it fair for all players from around the world. It almost feels like WGT owns the times we play if we value our CDP points.
On a side note, WGT has devised an ingenious idea to keep people playing their game with XP points. Their thinking is, if people are playing, people are spending. There's nothing wrong with that.