Passage of time in GW

I am working on a composition for the Lyssa's Fiction forum, and I'd like to know a general estimate of the amount of time that passes in Guild Wars, through the story.

I know the Searing adds 2 years, but after that I have no clue. Cna anyone help me out?

Thanks

I read somewhere its about a year from ascalon to the end of hells.

I think there should be in game time so you can tell as well as seasons.

yeah you know, they talked about seasons, they did do winters day, but.. well everything stays the same other wise.. ya know? it should change