There is no such thing as an "halving" in Peercoin.
PPC uses an algorithm where the rewards are adjusted periodically depending on the actual difficulty. The actual block reward is 13,77 PPC but if difficulty goes up, reward goes down and if diff goes down, reward goes up. The reason is that by design, PoW mining is expected to have a lower importance in the future, to save energy.
(This thread should be moved into the altcoin forum, I think.)
Yes move please to altcoin here it's a wrong section...