The Russian Prime Minister comes to President Putin and nervously tells him to abolish these time zones.

Putin: Why?

Prime Minister: Ah, I can't find myself with these times. I fly to another city, call home and everyone is asleep. Once, I woke you up at 4 in the morning, but I thought it was only evening. I called Angela Merkel to congratulate her on her birthday and she tells me she had it yesterday. And then, when I wished the Chinese President a happy New Year, and he said that it was on the next day.

Putin: Well, these are just minor issues.

Prime Minister: Minor issues?! Do you remember when that Polish plane crashed with their President? I called them to express my condolences, but the plane hadn't even taken off yet!!!