Bad syntax (should be url= not utl=).[utl=https://www.nytimes.com/interactive/2020/03/21/upshot/coronavirus-deaths-by-country.html]This New York Times graph[/url] still has it as doubling every 5 days.
The numbers from the WHO situation reports are for total global deaths, which does not appear in those NYT graphs (not that I could see anyway).
Calculating the interval over which numbers double is simple and straightforward, in a set of data that is assumed to be a time series. But even this can be ambiguous ... for example, how do you interpolate between adjacent times?
Making sense of the results from any such set of estimates quickly becomes difficult, however, for the WHO data.
For example, as at least one ISF member has pointed out, adjacent data points may not be 24 hours apart; sometimes they are time stamped 10:00 CET, sometimes something else. Then there’s the fact that the Grand Totals are the sum of numbers from over a hundred different sources, any subset of which likely has its own “24 hour” limitations (switching from/to Summer/Daylight Saving time is just one obvious one; weekends, public holidays, etc are others). And so on.
So estimated doubling times, for global Covid-19 deaths, must include considerable uncertainty. One reason why I am so glad we have the tilde character!