Anniversaries/April 7
From Sonic Retro
April 7 (add)
- 1999 — Issue #25 of the comic series Knuckles the Echidna is released in North America. Issue #153 of Sonic the Comic is released in the United Kingdom.
- 2006 — Sonic Riders is released for the PlayStation 2 in South Africa.
- 2020 — "Metarekkusu Senkan Shūrai!", the 61st episode of Sonic X, airs in Japan. Sonic the Hedgehog: Tangle & Whisper, a trade paperback of the IDW Publishing mini-series, is released in North America.