It takes 24-48hours
It just takes awhile because it has to setup with your adsense account and what not and it just takes a little bit
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
It just takes awhile because it has to setup with your adsense account and what not and it just takes a little bit