JohnLeeroy.2769:

Hello,

I was wondering how sites such as gw2stuff and dragontimer are able to figure out timers for world events.

rodadams.5963:

They watch all the events in the chain, including the pre-events and possible “defend” events, and over time, you see patterns such as “the pre-events for this meta event will start somewhere between 3 and 3.5 hours after the final event the time before.”

So they poll events.json regularly, to see when the events come up/down, etc, and go from there.

Each event takes some special knowledge of the triggering events, and looking for what the delay times are, etc.