Dewey Decimal System Day

About Dewey Decimal System Day

The Dewey Decimal Classification, colloquially the Dewey Decimal System, is a proprietary library classification system first published in the United States by Melvil Dewey in 1876.

It is observed on the birthday of Melvil Dewey, who was born on December 10th 1851.

25Apr

National DNA Day

• Science
• USA

Unlocking Deoxyribonucleic acid (DNA) continues to prove vital to medical research.

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26Apr

National Richter Scale Day

• Science
• USA

Find out the dates, history and traditions of National Richter Scale Day

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27Apr

National Sense of Smell Day

• Science
• USA

Don't turn your nose up at this day, smell is probably our most under-appreciated sense.

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3May

National Space Day

• Science
• USA

National Space Day, an out-of-this-world celebration and is always celebrated on the first Friday in May.

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Human Rights Day 

• Human Rights
• International

Find out the dates, history and traditions of Human Rights Day 

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Nobel Prize Day

• Science
• USA

On 27 November 1895, Alfred Nobel signed his will, giving the largest share of his fortune to a series of prizes in Physics, Chemistry, Physiology or Medicine, Literature and Peace – the Nobel Prizes.

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