field boss timer

i know there a bunch of topics like this but is there one i just want yes or no and maybe a link thanks in advance

It isnt possible

Field bosses spawn on a fixed schedule. It is (probably) determined server sided. However, if you can get the spawn time of a boss, and you know the deltas, you can find the next spawn easy.

Correction: It is possible, but you have to know the exact day and time of the last spawn, and since each channel has different spawn times, the timer could only be used for one channel. You would most likely only get an approximation of when the field boss would spawn. I've heard that there was a site where you could input the data and get the schedule, but I don't have the link.