Starting in the late 1960s, the hour was originally meant for educational children's programs. Over the years the hour began including henshin hero programs, one of the first being Rainbowman. On October 4, 1987, Toei's Choujinki Metalder was moved from a Monday evening 19:00 JST time slot to a Sunday morning 9:00 JST time slot, followed by a move of Kidou Keiji Jiban to 8:00 JST Sunday morning on April 2, 1989. Similarly, on April 6, 1997, Denji Sentai Megaranger was moved from a Friday evening 17:00 JST time slot to the Sunday morning 7:30 JST time slot, pairing it up with B-Robo Kabutack. The Super Sentai Series programs would continue to air at 7:30 JST after the Metal Hero Series ended and Moero!! Robocon aired in its slot on January 31, 1999 and was followed by the premiere of Kamen Rider Kuuga on January 30, 2000. Although a Super Sentai Series and a Kamen Rider Series aired side-by-side, the Super Hero Time branding of the shows did not begin until the Autumn 2003 broadcast season. As part of the block, actors from the programs often interact with each other to promote each other's shows, films, and perform skits. Satoru Akashi and Souji Tendou talked about each other's universes, and Master Xia Fu often showed up on the Den-Liner to talk with the Imagin and Ryotaro Nogami in cartoonish caricatures. The 2008 broadcast introduced new changes to the block, including scenes from the show's episode. For the 2009 television season, Kamen Rider Decade only aired for 31 episodes, allowing for the broadcast of Kamen Rider W for a full 49-episode run. This has introduced an offset of five months between the series premieres of the yearly Super Sentai Series and Kamen Rider Series, instead of an approximate month long offset that had existed before. This offset was shortened to four months after the finale of the 53 episode-long Kamen Rider Wizard, delaying the premiere of subsequent Kamen Rider Series to early October until the debut of Kamen Rider Build in early September, resulting in the increase of the offset to seven months. In 2019, this offset was reduced to six months with the premiere of Kishiryu Sentai Ryusoulger in March after its time slot was occupied by the four-week long miniseries Super Sentai Strongest Battle. The Super Hero Time block is part of the larger Nichi Asa Kids Time block, which begins at 8:30 JST with the airing of an ABC Television-produced shōjo anime animated by Toei Animation and ends at 10:00 JST after the airing of the Super Sentai series. All of the shows are properties of Bandai, who also sponsors the block. While Super Hero Time began airing with such anime in its inception, the "Nichi Asa Kids Time" branding did not begin until March 4, 2007. On Sunday October 1, 2017, the block moved to 9:00 JST, with the Kamen Rider series airing before the Super Sentai series. In 2020, production of new episodes for both Kamen Rider Zero-One and Mashin Sentai Kiramager was temporarily halted due to the impact of COVID-19 pandemic in Japan, including one of Kiramager''s cast members being infected, with special episodes containing old, unreleased footage being aired in the block until June, when production resumed, following a series of health safety compliances.
This block has been shown on TV Asahi, Mētele, ABC and all other stations of the All-Nippon News Network via satellite. In other parts of the country, some stations not affiliated with ANN are showing either one or both shows. ;Yamanashi
