Human Genome Project (16h 33min, jan 1, 1990 y – 11h 14min, apr 30, 2003 y)
Description:
 In 1990, the U.S Department of Energy and the National Institutes of Health (NIH) joined with international partners in an expedition to sequence all 3 billion chemical base pairs in the human genome which is the complete set of DNA in the human body. Originally, the project was organized to last 15 years but due to rapid technological advancements, it was completed in spring 2003 thus coinciding with the 50th anniversary of Watson and Crick's model of the basic structure of DNA 
Added to timeline:
Date:
16h 33min, jan 1, 1990 y
11h 14min, apr 30, 2003 y
 ~ 13 years