WCG race from December 01, 00:00 UTC to December 26, 00:00 UTC* 23:59:59 UTC
*) or rather, to December 25, 23:59 UTC
As far as I understand, WCG calculates team challenge stats (in WCG points) based on user stats (in BOINC credits, multiplied by 7) snapshot taken at 00:00 UTC. But they...