In this lesson, we look at various default settings found on the Company Information screen, such as:
Default Time zone
When you change an organization’s default locale to reflect your organization’s physical location, this may impact the display of some information, such as numbers, dates or phone numbers.
Edit Your Language and Locale Settings - https://help.salesforce.com/articleView?id=usersetup_lang_time_zone.htm&type=5
Select Your Language, Locale and Currency - https://help.salesforce.com/articleView?err=1&id=admin_language_locale_currency.htm&type=5