Source:
Timeline:Post-Island - Lostpedia
2007
Prior to April 5th, 2007
At least Jack and Kate escape the Island under unknown circumstances.
Thursday, April 5th, 2007
"Through the Looking Glass"
April 5th, 2007 is 2 years, and 108 days after contacting Naomi's Ship.
The man in the newspaper clipping dies at 4:00 AM.
Jack has left the island and since become deeply depressed, addicted to prescription painkillers, and alcoholic. He tears the newspaper clipping (which establishes the timeframe) from a newspaper and carries it with him.
Jack contemplates suicide on a bridge, causing a bystander to crash.
April 6th-On
"Through the Looking Glass"
Jack attends the viewing for this person at the Hoffs-Drawlar Funeral Home, and is the only attendee. He tells the funeral director that he is neither friend nor family to the deceased.
Jack calls Kate and requests a meet. They eventually meet up and Jack insists that they have to return to the island and that they should have never left. However, Kate disagrees.