From Sonic Retro
July 15 (
- 1998 — Issue #134 of Sonic the Comic is released in the United Kingdom.
- 1999 — Sonic Adventure: Limited Edition, an incomplete version of Sonic Adventure, is made available for rent along with a Sega Dreamcast at Hollywood Video, an American video store chain.
- 2015 — "Curse of the Cross Eyed Moose", the 29th episode of Sonic Boom, airs in North America. Sonic the Hedgehog: Worlds Unite Battles #1 and Mega Man issue #51, the eighth part of "Worlds Unite", are released in North America.
- 2017 — "The Haunted Lair", the 88th episode of Sonic Boom, airs in North America.