Anniversaries/October 23
From Sonic Retro
October 23 (add)
- 1993 — "Sonic's Nightmare" the 10th episode of Sonic the Hedgehog, is the 6th episode to air in North America.
- 2004 — "Flood Fight", the 32nd episode of Sonic X, airs in North America.
- 2007 — Sonic Christmas Blast, a DVD, is released in North America. Sonic X Edition 1, Edition 2, and Edition 3, all DVDs, are released in France.
- 2013 — Issue #57 of Sonic Universe is released physically in North America.
- 2019 — Issue #22 of the Sonic the Hedgehog comic series by IDW Publishing and issue #3 of the Sonic the Hedgehog: Tangle & Whisper comic mini-series are released in North America.