When Are They Now

Remember last season's game what kind of flash will this be, this season we have a new game:
When are they now:
In the first jump, we saw Yemi's plane crash, which happened in the late 1990s, so the first jump was about five to eight years in the past.
The second jump was relatively easy to pinpoint. The Hatch was exploded, so it was after the season 2 finale. But when Locke went into the plane, he saw Yemi's burned corpse. When Mr. Eko visited the plane in season 3, episode 5, the body was gone. Therefore, the time of this jump when Locke met Alpert must've been sometime between November 27, 2004 and December 2, the same time when Kate, Sawyer and Jack were first taken by the Others.
For the third time jump of this episode, the Hatch was entirely covered, putting it sometime before Locke and Boone discovered it on Day 17 after the crash. However, Desmond asks if Faraday is his replacement, suggesting that Kelvin Joe Inman, his partner in the Swan Station, is no longer around. Since he died the same day Oceanic 815 crashed, this jump most likely takes place within the first two and a half weeks of the crash.
The last jump is a little more tricky, but from the uniforms on the Others that capture Juliet and Sawyer we can assume it was a long time ago. Anywhere from the 30s to the 50s is a good guess. But obviously the Others are at war during this time.