$locale service provides localization rules for various Angular components. As of right now the only public api is:
id – {string} – locale id formatted as languageId-countryId (e.g. en-us)
© 2010–2017 Google, Inc.
Licensed under the Creative Commons Attribution License 4.0.
https://code.angularjs.org/1.6.6/docs/api/ng/service/$locale