I searched the forums but i could not find in which year DH2 is set in. I read in core that "end of times are coming" but is there any canon year for events in DH2? Like 817.M41 for deathwatch

DH1 was 815.M41 IIRC.

Also, this thread is/was discussing this as well for Only War:

https://community.fantasyflightgames.com/index.php?/topic/134660-which-time-to-use/

Maybe we can puzzle something together.

But you're right, I can't find anything concrete either. Some people suggested that they left that part out on purpose, just like the tabletop game.

https://community.fantasyflightgames.com/index.php?/topic/87561-dark-heresy-2nd-edition-beta-qa/

I'd just go for DH1's time for simplicity's sake.

I hoped they set DH2 at later date since i wanted to GM closer to second end of M41 to tie my campaing with major events in that time. I know that nothing keeps me from playing in that timeline but i feel strange when some events are suposed to happen 100 years before.

Considering the effects of the Warp on time, 100 years is barely noticeable on a galactic scale.