DateHistogram

DateHistogram[{date1,date2,…}] plots a histogram of the dates datei.

DateHistogram[{date1,date2,…},bspec] plots a histogram with bin width specification bspec.

DateHistogram[{date1,date2,…},bspec,hspec] plots a histogram with bin heights computed according to the specification hspec.

DateHistogram[{data1,data2,…}] plots histograms for multiple datasets datai.

Examples

Plot a histogram of dates:

DateHistogram[{"2020-01-01", "2020-02-15", "2020-02-20", "2020-03-10"}]

Specify monthly bins:

DateHistogram[{"2020-01-01", "2020-02-15", "2020-03-10"}, "Month"]

Please visit the official Wolfram Language Reference for more details.