Timeline of COVID-19: (combined and sourced)
Between October 6-11, 2019
Cell phone data suggests a 'hazardous event' occurs at Wuhan Institute of Virology (WIV) BSL-4 Lab, causing a shutdown:
https://www.dailymail.co.uk/news/article-8302739/Cellphone-location-data-analysis-Wuhan-virology-lab-suggests-hazardous-event-October-shutdown.html
October 14-19, 2019
Area surrounding WIV BSL-4 Lab goes on lockdown:
https://www.taiwannews.com.tw/en/news/3934444
October 19-27, 2019
World Military Games event is held in Wuhan. Many athletes have come forward in recent weeks saying they were sick at the games or immediately afterwards:
https://www.defense.gov/Explore/Spotlight/CISM-Military-World-Games/
https://www.dailymail.co.uk/news/article-8327047/More-competitors-reveal-ill-World-Military-Games.html
https://www.news18.com/news/sports/new-revelations-from-world-military-games-participants-hint-at-covid-19-spread-in-china-in-october-2625391.html
https://www.mirror.co.uk/news/uk-news/french-army-returned-wuhan-military-21988912
November 3-9, 2019
The 2019 International Workshop on Biosafety Laboratory Management and Techniques was supposed to be hosted by WIV, however the annual even was quietly cancelled and never took place. This is debated:
https://assets.documentcloud.org/documents/6884792/MACE-E-PAI-COVID-19-ANALYSIS-Redacted.pdf
https://www.businessinsider.com/coronavirus-pentagon-contractor-report-wuhan-lab-leak-debunked-daily-beast-2020-5
https://www.thedailybeast.com/pentagon-contractors-report-on-wuhan-lab-origins-of-coronavirus-is-bogus?ref=scroll
November 17, 2019
Researchers discover the beginning of a spike in Internet and Social Media searches related to "SARS", "Feidian", "coronavirus", "shortness of breath", "dyspnea", and "diarrhea". This may indicate the virus was already widely spreading:
https://www.medrxiv.org/content/10.1101/2020.02.24.20026682v1.full.pdf
November 26-28, 2019
A series of "suspicious" visits to the WIV BSL-4 Lab are detected. It appears the visitor might have been "a member of the Emerging Infectious Desease team and Duke-NUS in Singapore":
Needs source(s)
December 1, 2019
A Chinese scientific paper in The Lancet reported the first known patient came down with flu-like symptoms:
https://www.sciencemag.org/news/2020/01/wuhan-seafood-market-may-not-be-source-novel-virus-spreading-globally
December 31, 2020
China reports outbreak of Pneumonia cases:
https://www.who.int/news-room/detail/27-04-2020-who-timeline—covid-19
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(20)30183-5/fulltext
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7090728/
Jan 15th, 2020
Trump signs ‘phase one’ trade deal with China in push to stop economic conflict:
https://www.cnbc.com/2020/01/15/trump-and-china-sign-phase-one-trade-agreement.html
Articles of Impeachment presented to Senate:
https://www.npr.org/2020/01/15/796240568/house-set-to-vote-to-send-trump-impeachment-articles-to-senate
First COVID-19 patient in US returned to Washington State on January 15 after traveling to visit family in Wuhan, China:
https://www.nejm.org/doi/full/10.1056/NEJMoa2001191