Language and time on a Mac, fixed in plain English.
9 fixes for macOS 26 Tahoe and macOS 27 Golden Gate.
Change how your Mac shows dates, numbers and currencyFormats follow the Region setting, not the display language.Fix the wrong time or date on your MacDate & Time isn't set to update automatically or the time server can't be reached.Fix the wrong time zone on your MacThe time zone is set manually or Location Services is blocking automatic updates.Change your Mac's language, or switch it back to EnglishThe first language in Preferred Languages decides what macOS and most apps show.Show the date, day of the week or seconds next to your Mac clockThe menu bar clock shows only the time until you change its options.Change your Mac clock to 24-hour or 12-hour timeThe 12-hour or 24-hour clock is chosen in Date & Time settings.Set your Mac's date and time by handAutomatic time must be switched off before you can type a date and time.Switch your Mac between Celsius and Fahrenheit, or metric and imperialUnits follow the Temperature and Measurement system settings in Language & Region.Fix Calendar events showing at the wrong time on your MacThe calendar app has its own time zone support setting.