I am uncertain as the whether or not this date is true. There are a couple of different ideas as to what the date is. A few that I've heard are:

Nov. 30, 1970 - From the Internet Movie Database

Dec. 12, 1973 - From an Internet Source

Dec. 12, 1970

Nov. 30, 1973

You can tell that they are really similar. Some have said that the 1973 date makes more sense comparing it with her children's ages, but who knows for sure?

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