It is never stated.
Harry potter leaves from platform 9 and 3/4s. He and his Hogwart's companions get to this by running through a brick wall between platform 9 and 10. In the second book, the Chamber of Secrets, Ron Weasley and Harry run at the wall, only to find that it has been sealed off. Their excuse to the muggle station officer who comes to them looking very worried is ' sorry, couldn't control the trolly.'
Hogwarts
KINGS CROSS STATIONand to some extent Platform 9 3/4There is a belief that Boadicea was buried between platforms 9 and 10 in King's Cross station in London, England. There is no evidence for this and it is probably a post World War II invention.And Harry Potter leaves for Hogwarts from platform 9 3/4 in Kings Cross station
Digits
Hogwarts
11am according to the books.
This was from Harry Potter 1. The trains name was the Hogwarts Express.
Kings Cross Station.
3 and they're called periods not quarters.
Hogwarts express
It is never stated.
0.6667
To get to platform nine and three quarters where he will board the Hogwarts express students have to walk (or run) through the middle of platforms 9 and 10.
Harry potter leaves from platform 9 and 3/4s. He and his Hogwart's companions get to this by running through a brick wall between platform 9 and 10. In the second book, the Chamber of Secrets, Ron Weasley and Harry run at the wall, only to find that it has been sealed off. Their excuse to the muggle station officer who comes to them looking very worried is ' sorry, couldn't control the trolly.'
3 quarters is 9 twelfths, so 9 twelfths minus 3 twelfths is 6 twelfths, which is also a half.
It is: 9 times 3/4 = 6.75