Turning 6

I woke a very happy boy up this orning and said your 6 now. (It was a ery long wekend of counting down) He said no I'm not. I thought and thought oh no is his birthday tomorrow, this would be the first time I got one of thier birthdays wrong. He said that today is the day he is 'turning 6' and then tomorrow he will be six. I tried to explain that he was born early in the morning so really he is already six. There was no convincing him so "Happy Turning 6 today day"