User blog:Caring16/Time Line?

Ok I know it's a lame name for a blog. But I asked Aniki 13 this and well he said a blog should be made. My questions are what is the year in the one piece world. Also how long it took Roger to sail through the Grand Line. I think it took him 3-5 years due to really wanting enjoy the last years of his life before he died. As well as touching the lives of the people he met. Anyways. sorry for side tracking But anyways again. What is the time line how can we find out and well try to make story around it as well while not if your like me have a person with the same DF. sorry i just really need to figure this out and what better way then to seek advice from others. Thanks and hope we can all figure this out before i go mad.