Locale & Time Zone
The server picks the greeting from your browser's Accept-Language header (English, Spanish, German, French or Japanese). Override it with ?lang=, e.g. /locale?lang=es. The browser formats the date, number and price below with its own locale and time zone.
From the server
こんにちは！
Language: ja (日本語)
From the browser
| Browser language | |
| Time zone | |
| 2026-04-15 12:00 UTC in your time zone | |
| 1234567.891 as a number | |
| 1234.5 euros as a price |