last night when i went to youtube, i got a pop up leading to my government's COVID-19 resopnse/info center.
https://www.canada.ca/en/public-health/services/diseases/2019-novel-coronavirus-infection.html
tonight i got a similar pop up leading to the WHO version, and the first thing you see is misleading information. it states the first case "was first reported from Wuhan, China, on 31 December 2019."
https://www.who.int/emergencies/diseases/novel-coronavirus-2019
This may be the correct date of the first "reported case" but the first onset of symptoms occurred as early as Dec 1st 2019, according to a study of the first 41 cases submitted to the UK science journal the lancet, by chinese doctors and researchers on the ground in Wuhan as the outbreak began.
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(20)30183-5/fulltext