Anniversaries/April 15
From Sonic Retro
April 15 (add)
- 1995 — Issue #50 of Sonic the Comic is released in the United Kingdom.
- 2006 — "Agent of Mischief", the 75th episode of Sonic X, airs in North America.
- 2017 — "Nominatus Rising", the 75th episode of Sonic Boom, airs in North America.
- 2020 — "Burakku Torappu", the 67th episode of Sonic X, airs in Japan.