How long (generally) in advance can you officially buy NBA tickets?

Question

More specifically tickets for the Orlando Magic vs Golden State on 22 December '08?

Answer 1

if it's a single game they usually release them for sale about a month to two months in advance.  You can always buy season tickets now however.

Answer 2

until they are sold out

Answer 3

When they sell out you can't buy them. As long as they aren't sold out then you can buy them on nba.com/magic