Set Date and Month

I have an 2004 GTP Group G , its my baby 18,000 km , here's my problem if I change the date to the 24th today it will show Friday the 24th and not Thursday , anyone else had a similar problem ?

Yes, I can't fix the problem either. I believe it is due to the Leap year we had. It is annoying. I haven't figured out what to do.

Oh, now that is funny. Kinda. Probably something where you have to take it to the dealer. I see why most clock manufacturers don't put days on unless it gets its time from either GPS or an atomic clock signal.