10h 50min, apr 2, 1987 y - Thanos kills Gamora's and Nebula's families
Description:
After killing their families, Thanos takes both in as step-daughters.
Thanos and Ronan would turn them both into trained killers under vigorous training.
Added to timeline:
Date:
10h 50min, apr 2, 1987 y
Now
~ 37 years ago