At time of posting, it is Monday in the UK where I am from and it is showing correctly on the MixxMag demo. Now, Arifin, another moderator is in Japan and it is currently Tuesday. Again, it is showing correctly for him on the demo, i.e. Tuesday.
1. UK - Monday - Showing correct day? √
1. Japan - Tuesady - Showing correct day? √
The script is working on the Mixxmag demo. Therefore, there is a problem at your end, it maybe a computer configuration error.