Anniversaries/May 20
From Sonic Retro
May 20 (add)
- 1998 — The 130th issue of Sonic the Comic goes on sale in the UK, celebrating the comic's 5th anniversary. Issue #61 of the Sonic the Hedgehog comic series by Archie Comics is released in North America.
- 2009 — Sonic the Hedgehog is released for the iPhone worldwide.
- 2017 — "Robots From The Sky Part 3", the 80th episode of Sonic Boom, airs in North America.