Anytime after getting the hookshot, although I would recommend waiting until you have the longshot (received after defeating Dark Link in Water temple) to make it easier to latch onto the torch at the end of the spiral ramp to get a much faster time.
They can both be found in the Forest Temple, which you can only get to by being an adult and having the hookshot. You can get the hookshot by beating dampe the graveyard keeper in a race. Dampe can be found in his tomb under a headstone in the graveyard as adult Link. If you are having trouble with the forest temple, google it! :D
The duration of Graveyard Keeper's Daughter is 1.63 hours.
In the graveyard, in Kakariko Village. You must pull a gravestone back. Underneathe one of them is a tunnel where you will see Dampe the Keeper of the graveyard, but he is a ghost. Talk to him and race him and you will get the hookshot at the end of the race if you win.
Graveyard Keeper's Daughter was created on 2011-02-25.
After becoming 'Adult Link', go to the graveyard in Kakariko Village and open Dampé's (the grave keeper) grave. Go inside and race(you don't need to beat him) Dampé's ghost until he leaves you a "keepsake" (the hookshot). Also, if you finish the race under one minute Dampé will also give you a piece of heart.
Which game?
you just go to the graveyard in the mountain. you do somthing to a gravestone on the left and then a guy comes up. you race him and then you win the hookshoot or whatever it name is.
It's in the back of Kakariko Village.
He comes out just after sunset, the easiest way is to play the sun song and enter the graveyard.
She was a white witch and keeper of the dragon boat
They are dead, the info you need is in the graveyard where the sages are buried.
You must play the Sonata of Awakening.