Billions of years ago - one Engineer sacrifices himself to seed Earth with the building blocks of life.
1990 AD - Sir Peter Weyland is born.
1996 AD - A new military program to get orphaned infants and give them a lifetime of training is initiated.
2012 AD - Weyland Corp is founded by Peter Weyland.
2019 AD - Events of Blade Runner (Film).
2022 AD - A major blackout occurs
2023 AD - Peter Weyland gives a TED TALK.
2035 AD - Events of Soldier.
2036 AD - Neander Wallace introduces his new Replicant model.
2049 AD - Events of Blade Runner 2049.
2064 AD - An Elizabeth Shaw memory from that time is shown in a memorial device system seen by David in Prometheus.
2089 AD - Doctors Elizabeth Shaw and Charles Holloway discover a star map in a Scottish cave, dating back to 35 000 years.
2093 AD - Major happenings in the Prometheus Expedition.
2094 AD - Catastrophic happenings that destroys the Prometheus' crew, except Shaw and David.
2104 AD - Happenings from Alien: Covenant .
2122 AD - Happenings from Alien.
2137 AD - Happenings from Alien: Isolation aboard the Sevastopol Space Station.
2179 AD - Ripley is rescued from the Outer Rim.
2181 AD - Ripley is taken to Gateway Station.
2183 AD - Major happenings from Aliens, in Hadley's Hope.
2184 AD - Happenings from Alien 3.
2386 AD - Ripley is resurrected through a cloning process as one of many Xenomorph-Human hybrids known as the Ripley Clones.
2434 AD - Major happenings from Alien: Resurrection.