Open System Preferences > click on the pad lock & enter your admin name & password to open the lock , click on date and time select time zone > uncheck the box set time zone automatically using current location .
NOTE : This option must not be unchecked as difficulties can arise to login in Apple ID & iCloud websites .
Read this article : macOS Sierra: Manage which apps can use Location Services
If you turn off Location Services on your Mac, your precise location will not be sent to Apple. To deliver relevant search suggestions, Apple may use the IP address of your Internet connection to approximate your location by matching it to a geographic region.
Even if you disable Location Services, third-party applications and websites may still use other ways to determine your location. For safety purposes, however, your Mac’s location information may be used for emergency calls to aid response efforts regardless of whether you enable Location Services.