1917
● Ozwell E. Spencer is born.
● Edward Ashford is born.
● James Marcus is born.

1930
● Doug Frost is born.

1931
● Elliot Martin is born.

1946
● Mark Wilkins is born.

1953
● Lisa Trevor is born.
● Kenneth Sullivan is born.
● Mikhail Victor is born.

1957
● Enrico Marini is born.

1958
● Robert Kendo is born.

1959
● Geoge Hamilton is born.

1960
● Engineer Michael Warren begins the electrification of Raccoon City.
● The fifth head of the Ashford family, Edward Ashford, begins his research into what would later become known as the Progenitor virus.
● Albert Wesker is born.
● Barry Burton is born.

1962
● Ozwell E. Spencer enlists architect George Trevor to design and construct a reclusive mansion on the outskirts of Raccoon City.
● William Birkin is born.

1963
● Brad Vickers is born.

1966
● (December) Ozwell E. Spencer, James Marcus, and Edward Ashford officially establish the Progenitor virus which reconstitutes a living organism's DNA.
● Tyrell Patrick is born.
● Rodrigo Juan Raval is born.

1967
● (November) The construction of the mansion and lab facilities in the Arklay Mountains is completed.
● Jessica and Lisa Trevor are injected with a variant of the Progenitor virus. The virus fails to establish itself in Jessica, and she is subsequently disposed of. The virus shows promise in Lisa, and as a result she is placed under close observation.
● George Trevor is chosen to be a test subject; however, due to his intimate knowledge of the Mansion Facility, he is disposed of instead.
● Kevin Ryman is born.

1968
● Construction of Raccoon City's public transit trolleys begins in Europe and they are quickly put into use within the city.
● The managing director of the P-12A Incinerator Facility (Dead Factory) is born.
● Spencer founds the pharmaceutical company Umbrella with Marcus and Edward Ashford. The company is established to mask their biological research.
● (July) Edward Ashford contracts the Progenitor virus and dies. His son, Alexander Ashford, succeeds him as head of the Ashford family.
● (August) The Umbrella Training Facility is established in the Arklay Mountains with Marcus appointed as director.

1969
● (February) Alexander Ashford begins to design a facility in Antarctica. He secretly makes plans to build an underground laboratory for the purpose of the "Code: Veronica" project.
● (November) Umbrella's Antarctic Base and research facilities are completed.
● The Raccoon Subway system is officially opened for business. The subway, at the time, only runs for one mile and has three stops.
● Forest Speyer is born.

1970
● Alyssa Ashcroft is born.
● Curtis Miller (RE: Degeneration) is born.
● David King is born.

1971
● The "Code: Veronica" project is successful. Alexander combines his DNA with the DNA of his ancestor Veronica. The twins Alfred and Alexia Ashford are born.
● Murphy Seeker is born.
● HUNK is born.
● Joseph Frost is born.
● Frederic Downing (RE: Degeneration) is born.

1972
● Billy Coen is born.

1973
● Chris Redfield is born.
● Reynard Fisher is born.
● Josh Stone is born.

1974
● Ada Wong is born.
● Jill Valentine is born.
● Cindy Lennox is born.
● Jim Chapman is born.

1975
● Bruce McGivern is born.
● Richard Aiken is born.

1976
● The Ebola virus is discovered in Africa.
● Jack Krauser is born.
● Angela Miller (RE: Degeneration) is born.
● Luis Sera is born.

1977
● Albert Wesker and William Birkin join the Training Facility as prospective managers.
● Leon Scott Kennedy is born.
● Carlos Oliveira is born.

1978
● (January) Marcus successfully develops the T-Virus.
● (July) The closure of the Training Facility is finalized. Wesker and Birkin transfer their T-Virus research to the Arklay Research Facility; Marcus continues his own research in the closed down Training Facility.
● Joseph (Outbreak File #2) starts working at the Raccoon Zoo.
● Yoko Suzuki is born.

1979
● Claire Redfield is born.

1980
● Rebecca Chambers is born.
● Kirk Mathison is born.

1981
● (July) Although only ten years old, Alexia Ashford graduates at the top of her class from a prestigious university.
● Birkin begins to view Alexia is a rival.
● William Birkin successfully creates the MA-121 Hunter α.
● Steve Burnside is born.
● Excella Gionne is born.
● Dave Johnson is born.

1982
● Alexia injects her father, Alexander, with the T-Veronica virus, but the experiment ends in failure.
● The failed experiment of once former Alexander Ashford is codenamed "Nosferatu." Workers at the Antarctic facility can often hear his howls throughout the base. He is kept locked up behind a shelf in a basement in an office.

1983
● (December) Wesker researches secondary exposure to the T-Virus. He begins to have reservations about Spencer's plans.
● Alexia injects herself with the T-Veronica virus and enters a fifteen-year cryogenic sleep. To maintain the secrecy of this plan, it is reported that she died of accidental exposure to the virus.
● Raccoon City's elephant parade; with Oscar as the star, stops running.

1984
● Lisa Trevor is condemned to a small cabin outside of the Arklay mansion where she roams the area in search of her dead mother.
● Ramon Salazar is "born."
● Ashley Graham is born.

1985
● Sheva Alomar is born.

1986
● William Birkin marries fellow researcher Annette Birkin, and before long Sherry Birkin is born.

1987
● Michael Warren becomes mayor of Raccoon City.

1988
● Wesker, under orders from Spencer, assassinates Marcus. Under Birkin's guidance, the T-Virus program begins development of the B.O.W. Tyrant.
● Umbrella begins work on the "Nemesis" project at its sixth European research facility.

1989
● Becky McGee (Resident Evil: Umbrella Conspiracy novel)  is born.

1991
● Umbrella begins construction of an expansive underground laboratory beneath Raccoon City.
● Spencer approves Birkin's G-Virus project and work begins on it.
● Wesker is transferred to the Information Department.
● Priscilla McGee (Resident Evil: Umbrella Conspiracy novel) is born.

1992
● Umbrella contributes funds for the refurbishment of City Hall and the building of the General Hospital. A statue of Michael Warren is erected in City Hall.

1993
● Raccoon City Police Chief Brian Irons begins conducting negotiations with Umbrella.
● Birkin transfers to the underground lab in Raccoon City, clandestine meetings with Irons begin.
● Alfred Ashford graduates from a university in England, and becomes director of he Antarctic facility. He rises up the ranks to eventually become an executive of Umbrella, and then director of Rockfort Island.
● (December) A training facility for Anti-B.O.W. squad members is completed.
● Sheva Alomar's parents die in an accident at an Umbrella facility.

1994
● John from the Chicago lab takes over for Birkin at the Arklay Research Facility.
● Robert Dorson begins working for Alfred Ashford as his personal secretary.
● Alfred builds a private mansion and prison on Rockfort Island.
● Lucy Mallet (Resident Evil: Outbreak File #2) is born.

1996
● Raccoon City Police Department's S.T.A.R.S. is founded with Wesker as Captain.
● HUNK (later of the Umbrella Special Forces) undergoes combat training at Rockfort Island.
● Joe Kendo is contracted to design a special handgun specifically for the S.T.A.R.S. unit.

1997
● Barry Burton joins S.T.A.R.S. and also recruits his friend Chris Redfield. They join together.
● Ada Wong, a spy infiltrating Umbrella, becomes intimate with the new head researcher of the Arklay Facility; John.
● Billy Coen and a number of other marines are sent to Africa to halt a believed guerilla war.
● The leader ordered his men to attack an innocent village. Billy refuses to fight but is knocked out for disrespect of his commanders authority.
● Rani Chawla (RE: Degeneration) is born.

1998
● The events of Resident Evil 0, Resident Evil 1, Resident Evil 2, Resident Evil 3, Resident Evil: Code Veronica and Resident Evil: Survivor take place.
● The events of Resident Evil: Outbreak and Resident Evil: Outbreak File #2 take place.
● (February) Joe Kendo presents S.T.A.R.S. with an original prototype handgun and it is met with general approval, although a few customizations are requested.
● (May) A mysterious clone of Marcus's appears at the Umbrella Training Facility.
● There is a large-scale viral leak at the Arklay mansion. The research lab there is destroyed.
● Cerberus claims its first victim: a 20-year-old woman whose body is found dismembered.
● (June) Cerberus sightings are reported in a local Raccoon City magazine.
● (July) Two groups are sent to investigate the Training Facility. The first one is wiped out by B.O.W.'s located on the premises.
● There is an increase in reports of accidents and missing persons in the Arklay Mountains. The city sends the S.T.A.R.S. Bravo Team to investigate.
● Bravo Team's helicopter experiences engine trouble for unknown reasons and is forced to put down in the Arklay Mountains.
● Bravo Team pilot Kevin Dooley is killed inside of his helicopter by Cerberus on the premises. The other pilot; Edward Dewey, is attacked by zombies on the train and later turns.
● Billy Coen is being escorted to the prison for his "crimes" in Africa. The escort is attacked by cerberus and he manages to survive. Bravo Team believes he is responsible for the mysterious things happening in the forest.
● Bravo Team takes the Ecliptic Express to investigate the Training Facility, which is later destroyed.
● Alpha Team is sent out to search for Bravo Team when communication is lost.
● Joseph Frost is killed on sight when he comes across the mutilated hand of Kevin Dooley. The cerberus slaughter him while Wesker, Burton, Valentine and Redfield run for "that house." Brad Vickers flees.
● The occurrence of the Mansion Incident.
● Bravo Team leader Enrico Marini learns Wesker's true identity. Wesker murders Enrico.
● Ravaged by the virus, the mansion and the lab are destroyed. Four members of Alpha Team and one member of Bravo Team escape the catastrophe. The survivors are: Chris Redfield, Jill Valentine, Barry Burton, Brad Vickers and Rebecca Chambers.
● Wesker escapes the Arklay Research Facility before it is destroyed.
● (August) Former S.T.A.R.S. member Chris Redfield learns of the G-Virus and heads to Europe to investigate Umbrella.
● (September) The virus spreads throughout Raccoon City via infected mice. The city is declared a biohazard as incidents of "cannibalism" continue to rise.
● Birkin completes work on the G-Virus.
● A zombie horde attacks the city's police station.
● The police station is destroyed, and Chief Irons descends into mania. Warren escapes the city but leaves his daughter behind.
● U.B.C.S. (Umbrella Biohazard Countermeasure Service) arrives in the city to begin rescue operations.
● Rookie police officer Leon S. Kennedy arrives in the city at the same time as Claire Redfield.
● Umbrella deploys the B.O.W. Nemesis T-Type into the city, and it begins its hunt for former S.T.A.R.S. member Jill Valentine.
● Umbrella deploys mass produced Tyrants into the city.
● Leon and Claire escape the city with William and Annette Birkin's daughter, Sherry.
● With the arrival of the U.S. military the city is placed under martial law.
● U.B.C.S. survivors are exploited by Umbrella's official observer of the situation, Nicholai Ginovaef, and they die off one by one. The hospital is destroyed.
● Ada Wong and HUNK each acquire samples of the G-Virus.
● The underground lab in Raccoon City is destroyed.
● (October) The U.S. government decides to eliminate the virus threat by destroying Raccoon City with a missile strike.
● (December) Claire infiltrates the Paris laboratory, only to be captured by Rodrigo Juan Raval and imprisoned on Rockfort Island.
● Claire meets Steve Burnside, who has been imprisoned on Rockfort Island because his father attempted to sabotage Umbrella and sell components on the black market. His mother was killed and now he and his father are forced to work as slaves to Alfred Ashford on Rockfort Island.
● Wesker attacks the island with his own private force and releases the T-Virus onto the island.
● Claire escapes from the prison and sends an e-mail to Leno asking for help. Her location is made known to Chris.
● Jill escapes Raccoon City and goes to Chris's apartment, but he has already left for Rockfort Island.
● Dario Russo's daughter is assaulted and killed by zombies in Raccoon City. Jill attempts him to leave with her, but he refuses and locks himself inside a trailer. The zombies eventually break in and kill him.
● Alfred Ashford escapes the island.
● Chris arrives at Rockfort Island and finds Wesker.
● Alexia Ashford wakes up from her cryogenic sleep at the Antarctic Base, thanks to Alfred. Alfred dies shortly after.
● Steve Burnside is captured by Alexia Ashford and injected with the T-Veronica virus. He mutates and attacks Claire, but rejects the virus shortly thereafter. He dies in her arms.
● There are rumors circulating that Albert Wesker took a sample of Steve Burnside as he escaped the Antarctic facility, but it has never been confirmed.
● Claire and Chris are reunited at the Antarctic Base, and together they defeat Alexia.
● They escape before the base is destroyed.

1999
● The events of Resident Evil: Gaiden take place.
● A jet flies over the crater of Raccoon City, and takes photographs of the landscape. The photographs are transmitted down into an observation tower located deep within the crater, which has now been totally quarantined and fenced off. The scientists at the abse talk about non-human life forms that have survived six months on, and talking to an unknown person on the phone, mention how they are going to begin a series of tests which suggests relatively small amounts of the T-Virus have survived.
● Leon Kennedy is sent on a mission by "headquarters" to check out a cruiseship which has reported to have an outbreak on board. HQ loses contact with Leon and thus, Barry was sent to find him and help complete the mission. Together, they find Lucia, a girl who has survived the outbreak. They successfully destroy a amoebaean B.O.W. which can mutate and mimic any living thing it touches. The "Starlight Cruise Ship" sinks into the ocean and the mission is deemed successful.

2002
● Jack Krauser fakes his own death in a helicopter crash and joins Wesker's secret organization.
● The events of Resident Evil: Dead Aim take place.
● A US-STRATCOM agent; Bruce McGivern and Chinese agent Fong Ling, are sent to the Spencer Rain Umbrella cargo ship to halt Morpheus D. Duvall's Bio-terrorism threats.

2003
● (February) Chris and Jill take part in the mission to destroy the Umbrella Caucasus Research Facility in Russia. They were successful in destroying a new B.O.W. known as T-A.L.O.S.
● Albert Wesker arrives at the Russian facility at the same time as Chris Redfield and Jill Valentine.
● The events of Resident Evil 4 take place.
● The U.S. president's daughter, Ashley Graham, is kidnapped by the religious group known as the Los Illuminados. (The actual kidnapping was carried out by Krauser.)
● Leon Kennedy was scheduled to join Ashley's Secret Service detail, but is ordered to find her instead.
● Leon Kennedy is injected with the Las Plagas parasite by the Los Illuminados. After that he and Ashley, who is also infected with the same parasite, take shelter in a church.
● After escaping the village, Leon & Ashley are forced to seek refuge in a castle, but Ashley is once again apprehended. this time she is taken to an isolated island by Krauser under the orders of Ramon Salazar, the eighth head of the Salazar family. Leon confronts Salazar and defeats him.
● Leon heads to the island to find Ashley, and it is there that he defeats both Jack Krauser and Osmund Saddler, the leader of the Los Illumindaos cult. Leno and Ashley use the facility on the island to remove the parasites.
● Ada Wong steals the Las Plagas parasite sample from Leon.
● Leon and Ashley escape from the island by jet ski.

2005
● The events of Resident Evil: Degeneration takes place. This introduces the new company called Tricell.
● Tricell has secretly picked up where Umbrella left off, by testing on agents using the T-Virus while creating vaccines for the virus.

2006
● Ozwell E. Spencer, the tri-founder of the Umbrella Corportion,  is murdered at the hands of Albert Wesker at his secret Russian facility.
● Chris Redfield and Jill Valentine get a tip of the location's whereabouts and finds Albert Wesker standing over the corpse of Spencer. After a brief firefight, Wesker and Valentine both plummet through a window and presumably fall to their deaths. A search for both bodies turns up nothing.
● Jill Valentine is given a burial and is confirmed as killed in action.

2009
● The events of Resident Evil 5 take place.
● Jill Valentine is discovered to be the mysterious "bird lady," being under the control of Albert Wesker for the past three years after their faked deaths. Chris and Sheva are able to remove the mind control device from Jill's chest and she "snaps out of it."
● Ricardo Irving, Excella Gionne, Albert Wesker and Reynard Fisher are all killed.
● Chris Redfield, Sheva Alomar, Jill Valentine and Josh Stone survive the catastrophe near Kijuju and prevent Wesker's "natural selection" plans.