Q for someone in England

[abbet659 at hotmail.com]

No: HPFGUIDX 87334

1.  In PoA, it says the Firebolt goes 150 mph, I was wonder ing the 
England editions say 150 kmph or 241kmph which is wat 150mph equals?

2.  In OoP, Harry and the gang leave for the MoM as the suns going 
down and Harry gets back as the sun starts coming up, so how long is 
a night at the beginning of June.  I'm in southern California so our 
nights should be quite longer than your.

Abbet