So every week TV Asahi airs a programming block called 'Sunday Morning Kids Time' and at the center of that block is 'Super Hero Time' a.k.a. Super Sentai and Kamen Rider. Super Sentai airs at 7.30am and Kamen Rider airs straight afterwards at 8am. Super Sentai has occupied that timeslot for 20 years; It first moved there for the 7th episode of Megaranger, joining the Metal Hero series B-Robo Kabutack which was broadcast afterwards at 8am. Not only did ratings improve but the show got an extra 4 minutes of runtime! Within a couple of years the Metal Hero franchise had died and been replaced by 'Moero!! Robocon', a reboot of the old toku show 'Ganbare!! Robocon' which was originally created by Shotaro Ishinomori. After a year Toei decided to adapt another old Ishinomori show and created Kamen Rider Kuuga. Since then every Heisei Rider series has broadcast from that very same timeslot. But it's been announced that this is set to change. From October (presumably with the start of Kamen Rider Build) Kamen Rider will be pushed back one hour to air at 9am instead. At that time Kyuranger will leapfrog over it and begin broadcasting at 9.30 instead. The official reason for the change is that Toei are creating a new Sunday morning news program that will air before the kids shows begin. But it would be reasonable to assume that they're hoping the new timeslot will improve ratings.