why did Voldie attack the Potter on Halloween?

[Justine]

No: HPFGUIDX 116646


Lady Macbeth:
The Veil Between Worlds (yep, there's a reference to a Veil again) 
is thinnest this time of the year, and lifts entirely during 
Halloween.  This allows free passage between the Other World and our 
world, and any number of ghosts or other spirits could be wandering 
the Earth during this time.  This is where the tradition of guising 
(going out in costume) arose - travellers disguised themselves as 
something other than human on that night, so that they wouldn't be 
disturbed or maligned by wandering spirits.

Justine:
What interests me most about Samhain is, of course, the Veil.  
According to Celtic mythology, the Sidhe, or spirits, return to the 
world of the living on Hallowe'en to visit with family or tribe, and 
to celebrate for this one night.  When it has ended, they leave 
through the Veil once again.  Now here's the kicker: if a being has 
gone through the Veil before he's actually died, he can come back on 
Hallowe'en and remain with the living.  I'm probably getting my 
hopes up, but as soon as I discovered this, I literally jumped for 
joy, especially since Hallowe'en is such a crucial date in the 
series.

Justine,
who's been lurking for quite a long while... and who almost picked 
up an encyclopedia on werewolves today.