Codex Reset Watch is a free, unofficial tracker for OpenAI Codex usage resets, a just-for-fun site by WarpNav. It shows a live UTC countdown to the next reset, with a history whose entries link to the original posts by @thsottiaux on X. Optional browser alerts are available, and the site is offered in English, Simplified Chinese and Traditional Chinese.
It is free to use. It is not affiliated with or endorsed by OpenAI.

Codex usage limits reset on a schedule that usually shows up first as a post on X, and it is easy to miss across time zones. The tracker puts the next reset on a live UTC countdown and links each history entry to its source post.