Time axis with a given data

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ROOT Version: Not Provided
Platform: ROOT,py in Jupyter Notebook
Compiler: Not Provided

I have a “Date” tree in csv file. But, as you expect, when I load the file the root read it as strings.(e.g: ‘2020-02-01’,‘2020-02-02’,…,). I would like to make a Histogram(2D) by using this date tree as a x axis.
How can I do?

Thank you

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