Nostalrius Begins - Quality wow vanilla realm (1.12)

For those that don't know, DhK stands for Dishonorable Kill

Earlier tonight I decided to run a friend through RFK and accidently killed the NE escort npc (yeah I know) and got a DK for both me and him.

Question is, since I can't find anywhere on the internet, is if this single DhK will affect our entire pvp ranking on every calculation, or is it just this week? Say I wanna grind to R14, would that still be doable normally or with even greater effort? Or not doable at all?

at 60, each DK is about ~half a rank give or take and it'll affect the next week's honor update

Bullshit. A dhk removes 2% of your rank. That's all.
Unless you are below sergeant, it removes an even huger percentage then.

That's all, it does nothing else