Im not able to do a simple setlocale(LC_ALL, 'es_ES'); echo strftime("%A"); It always shows it in English. I'm developing in windows phalcon version x64 VC11 NTS last version. I'm coding from a phalcon generated template with the windows CMD, I'm trying to make that code works on every place(even controllers, views, etc...) but i can just make it... Please help.