Board Thread:Questions and Answers/@comment-28702329-20180608125550/@comment-26977364-20180731064617

Kazanshin wrote: It's clearly stated that SP stops time by going faster than light. Silver Chariot was only faster than SP when during the earlier stages of the part, and when he was possessed by Anubis. Are you insane? There's no reference anywhere in any official canon Jojo text where it states SP stops time by going faster than light. In fact, Araki's mentioned in interviews that Stand speeds of A approach and/or travel at the speed of light itself.

Star Plat and The World both stop time by halting the passage/flow of time, simple as that. There's no FTL tricks to go along with it. It's pretty widely accepted that most stands are scaled to Massively FTL speeds anyway (approximately 300c-ish speeds from calcs of Silver Chariot).