How to understand a datenum date?
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I'm trying to write some code that loops through files that are distinguished by date and I want to use the serial dates generated by datenum to do so. However, I'm having trouble understanding how datenum generates the serial date values. For instance, if I execute the following pseudocode:
myPath = 'D:\data\animals'
listing = dir(myPath)
...and if I open the listing I get a struct with one field being the datenum for each file in my directory. I see that the date and time '23-Aug-2021 18:29:25' generates the datenum 7.3839e+05. I don't understand the pattern. How does that date and time generate that exact value?