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matplotlib.axis.XAxis.axis_date
XAxis.axis_date(self, tz=None)- 
    
Sets up axis ticks and labels treating data along this axis as dates.
Parameters: - 
           
tztzinfo or str or None - 
           
The timezone used to create date labels.
 
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 https://matplotlib.org/3.2.2/api/_as_gen/matplotlib.axis.XAxis.axis_date.html