This is a computational site. I'm sure it has lots of uses.
I use it to find the day of a week a certain date was. e.g. Try typing in your birthdate. It will tell you the day of the week and exactly how old you are with months and days. And lots more.
It comes into its own to pinpoint a date from a newspaper report.
For example I found a newspaper report of a death "last Tuesday". The date of the newspaper is 10 Sep 1864. So to find the date of death simply type in the date
http://www.wolframalpha.com/input/?i=10+sep+1864
10th was a Saturday so the previous Tuesday was the 6th September 1864.
QED
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