Pandas plot giving wrong graph with date time index
With Pandas  1.2.*  and previous version as well, when the index is a date time format, dataframe is plotting wrongly. Date time as read from csv file using csv read  function has both date and time in it. The graph plotted is appearing wrongly, unless converted to String format. 
Wrong graph below
![IMG-20210518-WA0019](https://user-images.githubusercontent.com/47497915/118642790-59c3f700-b80e-11eb-8f81-b85f21725f20.jpeg)


Correct graph

![IMG-20210518-WA0023](https://user-images.githubusercontent.com/47497915/118642943-80822d80-b80e-11eb-81c3-b0581aa60067.jpeg)

