The fact that this is a Language Setting issue, passed from my mind when I saw the reply of Fabien Fuster. I thought: "He is either French or Spaniard (Is it so?!!). So, he uses a language setting different from English".
Before checking it out, the reply from David came.
I changed to French and ...bingo!
I changed to French, for another reason, also. In Greek the date appears as ddmmYYYY but the time as AM/PM
You can check for yourselves, by choosing the different languages.
A good day to you all.
Than you for your reply.
As you can see, the time is set to 24h and the date to dd/mm/yyyy.
Customer support service by UserEcho