This timeline of events from the Virginia Tech shooting lists times in Eastern Daylight Time (UTC-4).

The official timeline was compiled by TriData Corp, a division of defense contractor System Planning Corp., for use by the eight-member panel appointed by Virginia Governor Tim Kaine.

Background 2003 Seung-Hui Cho graduated from Westfield High School in Chantilly, Fairfax County, Virginia.

2004 Monday, January 19 Cho started trading on eBay with ID "blazers5505".

2005 Fall Andy Koch, Cho's suitemate, took Cho out to some parties at the start of the fall semester in 2005. At one party, Cho got "tipsy" enough that he opened up and began talking about his virtual love life. He said he had an imaginary girlfriend named Jelly, and that she was "a supermodel that lived in space." Jelly had a nickname for Cho—Spanky. Andy Koch along with John Eide snooped in Cho's belongings and "found nothing more threatening than a pocket knife."

Fall poetry class Professor Nikki Giovanni requested that Cho either change the sinister content of his poems or drop the class. Cho responded, "You can't make me."

Removed from poetry class Lucinda Roy, co-director of the creative writing program removed Cho from Professor Giovanni's class and tutored him one-on-one. When Cho refused to go to counseling, Roy notified the Division of Student Affairs, the Cook Counseling Center, the Schiffert Health Center, the Virginia Tech police and the College of Liberal Arts and Human Sciences.

Fall writing class Professor Lisa Norris, who had Cho in her class, alerted the associate dean of students, Mary Ann Lewis, who could find "no mention of mental health issues or police reports" on Cho.

Sunday, November 27 A female student filed a report with the Virginia Tech campus police indicating that Cho had made "annoying" contact with her on the internet, by phone and in person. The investigating officer referred Cho to the school's disciplinary system, the office of judicial affairs, which is separate from the police department.

Monday, December 12 Another female student, a friend of Andy Koch, filed a report with the Virginia Tech campus police complaining of "disturbing" instant messages from Cho. She requested that Cho "have no further contact with her."

Tuesday, December 13 Virginia Tech campus police notified Cho that he was to have no further contact with the female student. After Virginia Tech campus police left, Andy Koch, Cho's roommate, received an instant message from Cho stating, "I might as well kill myself now." In response to receiving the instant message from Cho, Andy Koch, Cho's roommate, notified the resident advisor and phoned his father. Koch and his father alerted Virginia Tech campus police that Cho had sent Koch a suicidal instant message. Virginia Tech campus police took Cho off campus to a voluntary counseling evaluation at New River Community Services, where he was examined by Kathy Goodbey. Goodbey determined that he was "mentally ill and in need of hospitalization." Cho's paperwork, declaring Cho "an imminent danger to self or others", was sent to court. Cho was transported to Carilion St. Albans Psychiatric Hospital where psychologist Roy Crouse determined that Cho "is mentally ill; that he does not present an imminent danger to (himself/others), or is not substantially unable to care for himself, as a result of mental illness; and that he does not require involuntary hospitalization."

Wednesday, December 14 Cho was released from Carilion St. Albans Psychiatric Hospital after his examination by Roy Crouse. Cho's paperwork was sent to special Justice Paul M. Barnett, who certified the finding and ordered follow-up treatment. Neither the court, the university nor community services officials followed up on the judge's order, according to dozens of interviews. Cho never got the treatment, according to authorities who have seen his medical files.

2006 Fall Cho enrolled in Professor Brent Stevens's English 3984 class, "Special Studies: Contemporary Horror. - 'not for the faint of heart' ." In that class, he analyzed The Texas Chain Saw Massacre and explored in papers and a "fear journal" how "horror has become a masochistic pleasure." Cho later sold his textbooks on eBay-affiliated site half.com. The textbooks that were sold included Men, Women, and Chainsaws by Carol J. Clover, a book that explores gender in the modern horror film. Others include The Best of H. P. Lovecraft: Bloodcurdling Tales of Horror and the Macabre; and The Female of the Species: Tales of Mystery and Suspense by Joyce Carol Oates, a book in which the publisher writes: "In these and other gripping and disturbing tales, women are confronted by the evil around them and surprised by the evil they find within themselves."

2007 Friday, February 2 Cho ordered a handgun online. He purchased the .22 caliber Walther P22 on the Internet from TGSCOM, Inc.

Friday, February 9 Cho picked up the .22 caliber Walther P22 from J-N-D Pawnbrokers pawnshop in Blacksburg, Virginia, across the street from the school.

March Cho stayed in a Roanoke motel and hired a dancer, Chastity Frye, for a one-hour performance.

Monday, March 12 Cho rented a burgundy Kia Sedona van from Enterprise Rent-A-Car at the Roanoke Regional Airport that he kept for almost a month. Cho videotaped some of his diatribe in the van.

Tuesday, March 13 Cho purchased a 9 millimeter Glock 19 handgun and a $10 box of 50 9-mm full metal jacket ammunition.Elaine Shannon. "Where Cho Bought His Deadly Weapon." TIME magazine. Published April 18, 2007. Last accessed April 19, 2007.

Thursday, March 22 Cho showed up at the PSS Range, an indoor pistol range in Roanoke, and spent an hour practicing, buying four ammunition magazines for the Glock 19. Range employees, investigators later said, remembered a young Asian man videotaping himself inside a van in the parking lot. Using the handle "blazers5505" on eBay, Cho purchased two 10-round magazines for the Walther P22 from "Bullelk14".

Friday, March 23 Cho purchased three additional 10-round magazines from "oneclickshooting", another eBay seller located in Fremont, Nebraska.Geller, A. & Kahn, C. (April 22, 2007). Internet key in probe in Va. Tech gunman. The Washington Post. Retrieved on April 22, 2007.

Late March, (exact date uncertain) Cho rented a room in another local hotel and was visited by a dancer from an escort service.Jerry Markon and Sari Horwitz (April 26, 2007) Va. Tech Killer's Motives Pursued The Washington Post

Saturday, March 31 (April 7, 8 and 13) Cho purchased additional ammunition and a hunting knife from Wal-Mart.

Unknown date Cho purchased additional ammunition magazines from Dick's Sporting Goods and chains from a Home Depot.

Early April (date unknown) Cho returns the rented minivan to its owner.

Sunday, April 8 Cho spent the night at the Hampton Inn in Christiansburg, Virginia, videotaping segments for his manifesto-like diatribe.

Friday, April 13

Bomb threats to Torgersen, Durham, and Whittemore Halls were called in anonymously. An additional bomb threat, this time to engineering school buildings, was found at the shooting scene at Norris Hall.Shooting victims at Tech massacre named , The Roanoke Times, April 17, 2007 A written bomb threat similar to the ones that were phoned in was found in Suite 2121 of Harper Hall, Cho's dormitory room. The Va.Tech Gunman: Well Prepared, 23, CNN.com, April 17, 2007.

Saturday, April 14 Witnesses saw a "suspicious looking man with a hooded sweatshirt" near the entrance to Norris Hall, and some of the doors chained shut around the same time. Sunday, April 15 Cho phoned his family in Fairfax County.

Day of the shooting

Monday, April 16 5:00 a.m.: While in Suite 2120 (room 2121) of Harper Hall, Joseph E. "Joe" Aust, one of Cho's five roommates, noticed that Cho was awake and at his computer. Around 5:30 a.m.: Karan Grewal, one of Cho's other roommates, noticed Cho, clad in boxer shorts and a T-shirt, brushing his teeth and applying acne cream after Grewal finished an "all-nighter" of study in Room 2121. Grewal did not see Cho after this point.Special Report: Tragedy at Virginia Tech - Newsweek National News - MSNBC.com Between 5:30 and 6:00 a.m.: Aust saw Cho return from the bathroom, get dressed, and leave.Tragedy in Blacksburg Before 7:00 a.m.: Cho was seen waiting outside an entrance to West Ambler Johnston Hall. Before 7:15 a.m.: Emily Hilscher was dropped off at her dormitory by her boyfriend, Karl D. Thornhill. 7:15 a.m.: A 9-1-1 emergency call to Virginia Tech campus police reported a shooting at West Ambler Johnston Hall, leaving Ryan Christopher Clark, the resident advisor, dead and Emily Hilscher fatally wounded in Suite 4040, which housed Hilscher.At least one dead in campus shooting , WDBJ7 Roanoke. April 16, 2007Front page , Collegiate Times, April 16, 2007Larry Hincker. "Shooting at Virginia Tech ", Virginia Tech bulletin, April 16, 2007. Between 7:15 am and 9:01 a.m.: Cho returned to his dormitory room to reload and left a "disturbing note." 7:30 a.m.: Investigators from VT PD and Blacksburg PD arrived. Between 7:30 am and 8:00 a.m.: Heather Haugh, Emily Hilscher's friend and roommate, arrived to meet her to go to chemistry class together. When she asked about Hilscher, Haugh was questioned by detectives and gave them the information that Hilscher would usually spend weekends with her boyfriend, Karl Thornhill, at his off-campus townhouse. She explained that on Monday mornings Thornhill would drop off Hilscher and go back to Radford University where he was a student, and that Thornhill was an avid gun user. This led the police to seek him out as a "person of interest." 8:00 a.m.: Classes at Virginia Tech began. Around 8:00 a.m.: West Ambler Johnston was locked down; a third floor resident assistant notified students of the lockdown. Aimee Kanode, a freshman, stated that police lifted the lockdown shortly before the Norris Hall attacks.Timeline: How deadly shooting unfolded - Massacre at Virginia Tech - nbcnews.com 8:25 a.m.: Virginia Tech leadership team met to develop a plan on how to notify students of the homicide. Meanwhile, police stopped Karl Thornhill, in a vehicle off-campus and detained him for questioning. 8:52 a.m.: University President Charles Steger's office is locked down. 9:00 a.m.: Virginia Tech leadership team was briefed on the latest events in the ongoing dormitory homicide investigation. 9:01 am: Cho mailed a U.S. Postal Service express parcel from Blacksburg P.O. to NBC headquarters in New York City, containing pictures of him holding weapons, a 1,800-word diatribe and a video clip alluding to the coming massacre. 9:05 am: Jocelyne Couture-Nowak's Intermediate French Class in Norris 211 began. Around 9:05 a.m. to 9:15 a.m.: Cho was seen in Norris Hall, an Engineering building. Using chains (possibly the ones he had purchased at Home Depot), Cho chained the building's entry doors shut from the inside. 9:26 a.m.: E-mails were sent to campus staff, faculty, and students informing them of a "shooting incident" at the West AJ dormitory. Around 9:30 am: A female student (Rachel Hill, who is shot to death in the classroom) walked into Norris 211 and alerted the occupants that a shooting occurred at West Ambler Johnston, where she lived at. 9:42 a.m.: Students in the engineering building, Norris Hall, made a 9-1-1 emergency call to alert police that more shots had been fired.Timeline of Virginia Tech Shooting Spree WDBJ7 9:45 a.m.: Police arrived three minutes later and found that Cho had chained all three entrances shut. Between 9:40 and 9:51 am: Using the .22 caliber Walther P22 and 9 millimeter Glock 19 handgun with 17 magazines of ammunition, Cho shot 47 people, killing 30 of them. Cho's rampage lasted for approximately nine minutes. A student in Room 205 noticed the time remaining in class shortly before the start of the shootings.