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Can't customize bar width when x axis is datetime

I’m trying to confirm that it is not possible to customize the width of bars in a bar chart if the x axis labels are datetime? Looks like Morgan from this post was having the same issue. I have referenced this documentation which has a section on how to adjust bar width. This works well except if you replace the x axis in the documentation with datetime a blank plot is rendered. Any way around this?

Thanks in advance!