When you see your local farmer's dead level 1 spotter lying on the ground is about the time it spawns. Usually 30 minutes before so keep an eye open for dead people.
We've fought vs. our fellow farmers for few days. The same time of day.
It took them like 20 minutes to be there. Unfortunately we have not managed to kill the queen before farmers each time. It happened in the past, but that time we were raiding before the respawn, so it's not exactly the same situation.
Then they spoiled our drops nuking it with high-lvl nukers. We did the same to them. So... for three days AQ never dropped a thing :confused:
Right now Ant Queen, Core, Baium are seized by raid farmers on Hindemith. They kill regular raid bosses as well in a short time span. Generally no yummy boss lives longer than 30 minutes.
Situation might be similar for your server.
And yes, watch out for dead people. And be aware - if they disappear next to living boss, you'll meet some raiders in a near future.
Well, I saw the Ant Queen alive :) Only to be killed an hour later by the "farmers" on my server, Gustin... only they weren't farmers, they were other players pretending to be farmers by creating a clan with a very similar name to our local farmers. o.O Scary. And now I'm waiting to see how long it takes the Queen Ant Larva to becoem a real Queen Ant! O.o