Determines date strings (e.g. timestamps, months, etc) language and region format.

When set to 0, system language will be used.

In case you don't know which region to choose (e.g. en-US vs en-UK), choose the most popular one. Region part is used only when system language does not match the application language.

Example:

language_dateFormatLocale=en-UK, but system language is en-US, then application will use en-US automatically for date formats.

language_dateFormatLocale=en-UK, but system language is ru-RU, then application will use en-UK, since system language does not match.