ojs and many others have referred to the "switch from night to day" mode, it isn't like something is different or anything is switched on or pushed, it is just an easy way of letting the general public with no knowledge what so ever try on understand a miniscule speck of the situation. It is no different to standard bandboxing and splitting of sectors that can be happening every minute of every day, just that at night the room is bandboxed almost as much as it possibly could be, and this problem arose as the traffic levels began to pick up and the sectors needed splitting.