This is an official timeline for the Silent Hill series. Please make sure that all dates are referenced and are official and that the dates appear chronologically.
The dates for Silent Hill: Origins, Silent Hill, Silent Hill 2 and Silent Hill 3 are obtained in Alex Shepherd's diary, and the ages of the characters are provided in the Book of Lost Memories.  The ages for Silent Hill: Homecoming's characters are provided in the manual.  Everything else is taken from the games.
For a timeline of film events, please see Timeline (film).
Pre-16th century Edit
- Native Americans conduct mysterious and religious rituals here. The land is valued as a sacred place to the Natives. They revered the town as "The Place of the Silent Spirits". The land is known as a holy place and seems to possess a mysterious power. 
- In the late 1600s, settlers begin to come to Silent Hill from Europe. The Native Americans are forced to leave the land. 
- Jennifer Carroll is executed for witchcraft.
- In the early 1700s, a mysterious epidemic breaks out and the town is abandoned. 
- Daniel R. Bryant and a group of thirty four pioneers cross Toluca Lake to arrive in Silent Hill.
- In 1743, Daniel R. Bryant dies from influenza and is buried in town. An overlook is named in his memory.
- Around this time, the town is resettled as a penal colony. Silent Hill Prison and Brookhaven Hospital are constructed. Brookhaven Hospital was built in response to a great plague that followed a wave of immigration to this area. It was originally little more than a shack, but it gradually grew. It was at this time that the town was given the name "Silent Hill". 
- The Gillespie Coal & Iron Company establishes the Devil's Pit Mine.
- Mason Bartlett is born.
- On March 15th, Maine secedes from Massachusetts and becomes a state.
- According to the style, Allen Smith paints Waterfront Landscape around this time, a scene of this area from long ago. There were fewer people then, and only a handful of buildings.
- Isaac Shepherd is born.
- Around this time, Silent Hill Prison closes. 
- Daniel Shepherd is born.
- Around this time, a coal field is discovered and Wiltse Coal Mine opens, which leads to the revitalization of the town. 
- Shepherd's Glen is founded by Isaac Shepherd, Edith Holloway, Cornelius Fitch and Mason Bartlett. 
- Daniel Shepherd, Ann Holloway, Theodore Fitch and Helen Bartlett are sacrificed by their respective families on September 23rd to appease God.
- Andrew Fitch is born.
- Elizabeth Fitch (née unknown) is born.
- The Gillespie Coal & Iron Company begin extracting ore from the Devil's Pit.
- The American Civil War begins.
- Patrick Chester and his son both participate in the American Civil War. 
- Toluca Prison Camp is constructed for POWs. 
- Diyu's Tusk Cavern is discovered by Chinese immigrant miners.
- William Shepherd is born.
- The American Civil War ends in a Union victory.
- Catherine Shepherd (née unknown) is born.
- Frederick Holloway is born on November 24th.
- The events of Past Life occur.
- John Holloway is born on June 12th.
- Nancy Holloway (née unknown) is born on June 22nd.
- Lydia Bartlett is born.
- Mason Bartlett dies on March 10th.
- Stephanie Shepherd (née unknown) is born.
- David Shepherd is born.
- Lois Bartlett (née unknown) is born.
- Regina Fitch is born to Andrew and Elizabeth Fitch.
- Isaac Shepherd dies on March 9th.
- Henry Holloway is born on December 12th.
- Andrew Fitch dies on April 15th.
- Robert Holloway is born on August 17th.
- Catherine Shepherd dies on January 1st.
- William Shepherd dies on March 1st.
- Sophie Holloway (née unknown) is born on July 29th.
- Around this time, people start to mysteriously disappear all over town. 
- Henry Holloway dies on February 4th.
- Mary Bartlett (née unknown) is born.
- Lydia Bartlett dies on April 5th.
- Lois Bartlett dies on May 6th.
- Elizabeth Fitch dies on June 29th.
- Bartlett Vineyards is established.
- Nancy Holloway dies on December 16th.
- Stephanie Shepherd dies on December 31st.
- In the early 1900s, Toluca Prison closes and Silent Hill becomes a tourist area. 
- By this time, the religious group known as the Order has been formed in the town. At first, the citizens oppose them, but they gradually gain more influence as more members join, until they begin to infiltrate Silent Hill's public institutions and gain more influence and strength. 
- Frederick Holloway dies on January 16th.
- John Holloway dies on October 29th.
- Thomas Shepherd, Earnest Holloway, Rose Fitch and Charles Bartlett are sacrificed by their respective families to appease God.
- Horace H. Bartlett is born.
- Robert Holloway dies on January 23rd.
- David Shepherd dies on March 1st.
- Caleb Bartlett is born.
- According to local legend, miners discover mysterious symbols carved into the walls of a limestone grotto in the Superstition Caverns, leading to wild speculation about witchcraft and the occult. Soon after, a series of unfortunate accidents and reports of mysterious creatures force the Gillespie Coal & Iron Company to suspend mining operations along this seam.
- Caleb Bartlett dies on August 3rd.
- Mary Bartlett dies on August 4th.
- In November, a tourist ship called the Little Baroness goes missing on Toluca Lake.
- Sophie Holloway dies on September 13th.
- Regina Fitch dies on May 14th.
- Michael Kaufmann is born.
- Horace H. Bartlett dies on March 10th in a powder mill explosion.
- Dahlia Gillespie is born.
- Strange events at Toluca Lake occur. After Wiltse Coal Mine closes and Silent Hill becomes a sightseeing area, a succession of boating accidents occur. This leaves Silent Hill with a poor reputation for sightseeing. 
- Devil's Pit Historical Park is founded.
- Harry Mason is born.
- Martin Fitch is born.
- Rebecca Shepherd, Lawrence Holloway, Rusty Fitch and Patricia Bartlett are sacrificed by their respective families to appease God.
- Cybil Bennett is born.
- James Wheeler is born.
- Sam Bartlett is born.
- Lillian Shepherd is born.
- Lisa Garland is born.
- South Ashfield Heights is built.
- The mayor of Silent Hill dies suddenly and, one after the other, the staff at a development group for the town die accidental deaths. 
- James Sunderland is born.
- Curtis Ackers is born.
- Walter Sullivan is born in Room 302 and his parents flee South Ashfield Heights. Frank Sunderland discovers baby Walter and sends him to St. Jerome's Hospital. Walter becomes a ward of the state, is adopted by the Wish House Orphanage and becomes involved with the Order.
- Mary Shepherd-Sunderland is born.
- Alessa Gillespie is born.
- Claudia Wolf is born.
- Dahlia Gillespie tells 6 year old Walter that Room 302 is his mother. Walter begins to travel to Ashfield by bus/train and visits South Ashfield Heights regularly. Walter encounters Richard Braintree in the apartment building and is frightened by him.
- Angela Orosco is born.
- 8 year old Walter learns of Cynthia's name, who was about 3, somewhere in Ashfield.
- In Ashfield, Walter injures a kitten in Steve Garland’s pet store.
- The events of Silent Hill: Origins occur, according to Alex Shepherd's diary. 
- Cheryl Mason is "born" and is adopted by Harry and Jodie Mason, who find her on the side of the road.
- Amy Baldwin is born.
- Eileen Galvin is born.
- Jodie Mason dies either from her illness or in a car accident. 
- The events of Silent Hill occur, 7 years after Silent Hill: Origins. 
- Dahlia Gillespie dies, killed by the Incubator/Incubus.
- Heather Mason is born.
- 16-year-old Walter receives the Shabby Doll from 5-year-old Eileen Galvin on a trip to Ashfield.
- In November, Amy Baldwin dies after falling out of the Baldwin Mansion attic window after trying to retrieve a birthday card for her father. 
- Laura is born.
- Alex Shepherd is born.
- Elle Holloway is born.
- 13-year-old Cynthia confronts and ridicules 18-year-old Walter in South Ashfield Station.
- A middle aged man dressed in black (perhaps Walter's biological father) leaves William Gregory a broken watch.
- Walter moves to Pleasant River and studies at the university.
- In Portland, Harry murders a member of the Order in self defense, who was searching for the reincarnation of Alessa. After this event, Harry was acquitted in court and moved to another town to protect their safety. Harry changed Cheryl's name to Heather, and began dying her hair blonde. 
- Harry Mason dies in a car accident in the Silent Hill: Shattered Memories timeline.
- James and Mary visit Silent Hill on vacation.
- At 24, Walter Sullivan murders 10 people in 10 days and removes each of their hearts. The 10 Hearts are Jimmy Stone, Bobby Randolph, Sein Martin, Steve Garland, Rick Albert, George Rosten, Billy Locane, Miriam Locane, William Gregory and Eric Walsh. This becomes known as the Walter Sullivan Case.
- Police arrest Walter Sullivan, who commits suicide in prison with a soup spoon, by severing his neck's carotid artery. Joseph Schreiber suspected this Walter Sullivan was not the real Walter.
- South Ashfield Heights tenants (including Frank Sunderland and Richard Braintree) notice Walter Sullivan in the apartment building with a heavy tool, white oil, a bowl and a bag with blood.
- Walter Sullivan performs the Ritual of the Holy Assumption by crucifying himself in the back of Room 302, and in doing so, he creates his "own Otherworld" (called discerned, blasphemous and a "sub-Otherworld" by the Order) and becomes Victim 11: "Assumption".
- Nora Holloway is born.
- Laura and Mary meet each other for the first time at the same hospital.
- Ten years after Dahlia's death, the Order remained rather inactive. Around this time, Vincent Smith manages to revive and expand the Order using their finances. 
- The events of Silent Hill 2 occur. 
- Martin Fitch saves an 8-year-old Alex Shepherd from dying of hypothermia in a school bus accident. 
- Joshua Shepherd is born.
- Joey Bartlett is born.
- 3 years after the Walter Sullivan Case (10 Hearts), police discover Victim 12 "Void" (Peter Walls) and suspect the murderer to be a Sullivan copycat.
- Ariadne Johnson is born on January 6th.
- Frank Sunderland remarks in his diary that Walter Sullivan was born 30 years ago.
- Joseph Schreiber begins researching Walter Sullivan. Throughout the year, he writes in his Red Diary until he disappears.
- The corpse of Toby Archbolt is found.
- The events of Silent Hill 3 occur seven years after Silent Hill 2, seventeen years after Silent Hill, and twenty-four years after Silent Hill: Origins.
- Shepherd's Glen celebrates its 150th anniversary on Saturday and Sunday, September 20th and 21st respectively.
- Scarlet Fitch, Nora Holloway and Joey Bartlett are sacrificed by their respective parents to appease God.
- Joshua Shepherd dies in a boating accident and Alex is sent away to a mental hospital. 
- Alex escapes from an insane asylum and returns to Shepherd's Glen.
- In autumn, the events of Silent Hill: Homecoming occur. 
- The events of Silent Hill: Shattered Memories occur in a different timeline. 
- Alessa's History states that Harry's wife died 11 years before Silent Hill. However, this makes no sense as Cheryl, who is 7 years old in Silent Hill, wouldn't have existed then and Harry's wife is seen adopting Cheryl in the opening. As well, Harry states his wife died 4 years ago in Silent Hill. This was likely a goof.
- There have been some multiple contradictory dates for Silent Hill: Downpour. Bobby Ricks's calendar lists no month or years, but states the first begins on a Saturday.  A calendar in a garage near the beginning of the game shows August in which the 1st begins on a Tuesday, which could mean 2006 or 2017. The missing poster of Ariadne Johnson says she is 8 years old and was born in 1996, suggesting 2004.
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 The Book of Lost Memories - Timeline
- ↑ The town celebrated its 150th anniversary in 2003.
- ↑ 
- ↑ 4.0 4.1 4.2 The Book of Lost Memories - Alessa's History
- ↑ http://www.silenthillcommunity.com/viewtopic.php?f=20&t=432279
- ↑ Another Crimson Tome reveals Cynthia is 29 years old during Silent Hill 4.
- ↑ Harry Mason states that his wife died 4 years ago when meeting Michael Kaufmann for the first time. The game's manual said Jodie died of her illness. The official novel said Jodie was killed in a car accident.
- ↑ Maria states the calendar in Amy's room is "10 years old", placing her death in 1984. We can assume that she was being approximate when she said "10 years" since according to Alex Shepherd's diary, it would have been 9 years, thus Silent Hill 2 would still placed in 1993 and not 1994.
- ↑ http://www.translatedmemories.com/bookpgs/Pg66-67SH3Character.jpg
- ↑ Laura says to James in Brookhaven Hospital that they met a year ago.
- ↑ Silent Hill 2 occurs "10 years later" after Silent Hill according to Alex Shepherd's diary. In addition, if the marking is uncovered, 1993 is explicitly shown.
- ↑ The Little Baroness went missing in 1918, and The Arcade takes place "75 years later." In addition, the spiral staircase area is labeled "19181993", making the year clearer.
- ↑ 
- ↑ Eileen tells Henry that Joseph disappeared 6 months before he moved in. In the introduction of the game, it's said that Henry has been living in Room 302 for at least 2 years. 2001 - 2 = 1999.
- ↑ There are two things that support this. Apparently, the timeline that came with the Silent Hill 4 guide says that SH4 is set 18 years after SH1. The second is the placement of days of Walter's Diary.
- ↑ After the summer, our town had this big anniversary party... And then, that whole week, Alex didn't come by and he didn't call me. It was weird, so I went over to his house. No one answered the door. I could hear Alex's mom crying... His dad came out and told me that Alex had left. That was a few years ago and I still haven't forgiven Alex for just leaving like that without even calling me. —Elle Holloway
- ↑ Adam's age and his birth date mean Homecoming must take place between April 2007 and April 2008.  In October, Alex states in his diary that he plans on escaping from the hospital and hitching a ride to Shepherd's Glen, meaning that it would be impossible for Homecoming to take place in 2008 or else Adam would have been 54 years old. 
- ↑ Cheryl Heather Mason was born in 1983. She was seven years old in 1990 when Harry died in a car crash. Dr. K states Cheryl has been denying her father's death for eighteen years. 1983 + 7 + 18 = 2008. As well, there can be boxes found in Orion Hunting Lodge with "2008" written on them.