Frankenstein Day is an annual holiday celebrated on August 30, Mary Shelley's birthday, in celebration of her 1818 novel "Frankenstein; or, The Modern Prometheus". 
History.
Mary Wollstonecraft Shelley was born on August 30, 1797. She wrote the novel "Frankenstein" in 1816, and published it in 1818. The holiday Frankenstein Day was created to honor Mary Shelley and Frankenstein, every year on the anniversary of her birthday. Frankenstein Day has also been known as National Frankenstein Day.
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