Why is the month and day of week always in English, even if the system language is Spanish?

Question

I tried restarting, changing settings, etc, but as you can see, it is still in English.

Edit: I downloaded the source for indicator-datetime; from what I can see, the problem may be deeper. GTK?

Answer 1

Try going to language support. Selecting the "Regional Formats" tab. Selecting desired format/language (Spanish) and then click "Apply system-wide".

It took me ages work out how to change this between English and Portuguese, but it was that simple.

You need to reboot before changes take effect.