Not at all sure whether Wikipedia is the best arbiter of anything, but an article in the Wall Street Journal (behind a paywall) that they reference indicates the first case was "on or about November 17, 2019". Guess you could just pick noon on the 17th and see what happens if it's not super time consuming to construct the chart and do a cursory analysis to see if anything jumps out at you.
C19 timeline
Date: 2024-07-09 07:58 pm (UTC)https://en.wikipedia.org/wiki/Timeline_of_the_COVID-19_pandemic
Not at all sure whether Wikipedia is the best arbiter of anything, but an article in the Wall Street Journal (behind a paywall) that they reference indicates the first case was "on or about November 17, 2019". Guess you could just pick noon on the 17th and see what happens if it's not super time consuming to construct the chart and do a cursory analysis to see if anything jumps out at you.
MJ from MA