TMF-Ep45-The Deadline-
#47 of The Magic Fighters
So it appears that there is another reason to keep exploring the magic hour.
Kevin with the help of his two brothers Hugo and Dan were investigating the magic hour and were using the moon phases to try to figure out a pattern of sorts. The Magic hour is the time out of a day at a given random hour that would cause the magic citadel to appear and magic shadow monsters to appear. It's unknown why this had happened and why suddenly it happened right after Thomas had come to america. However the three brothers noticed something, the magic was getting stronger and stronger as time went on and the day of a full moon and the day of an eclipse during the day would likely cause a strong surge of magic to appear. Thomas was then given this information- beat the mastermind or whatever the puppet controlling the magic hour as likely with magic so strong the world would likely fuse with the magic hour.