Dewey Decimal is one of the most popularly used library organization system in the world.
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The system, first published in 1876, organizes library materials by fields. There are 10 main fields that are further divided into smaller, more specialized area. Libraries around to the world use the system to organize and classify their books.
In addition to creating this ingenious system of organization, Melville Dewey was also a big proponent of the metric system. He was the founder of the American Metric Bureau.
How to Celebrate?
- Learn more about the Dewey Decimal System.
- Visit a library and talk to a librarian about how they keep track of all the books in the building.
Did You Know…
…that only 3 countries in the world do not use the metric system today? These are the United States, Myanmar, and Liberia.
Dewey Decimal System Day Observances
| Year | Weekday | Date | Name |
|---|---|---|---|
| 2025 | Wed | Dec 10 | Dewey Decimal System Day |
| 2026 | Thu | Dec 10 | Dewey Decimal System Day |
| 2027 | Fri | Dec 10 | Dewey Decimal System Day |
| 2028 | Sun | Dec 10 | Dewey Decimal System Day |
| 2029 | Mon | Dec 10 | Dewey Decimal System Day |
| 2030 | Tue | Dec 10 | Dewey Decimal System Day |
| 2031 | Wed | Dec 10 | Dewey Decimal System Day |
| 2032 | Fri | Dec 10 | Dewey Decimal System Day |
| 2033 | Sat | Dec 10 | Dewey Decimal System Day |
| 2034 | Sun | Dec 10 | Dewey Decimal System Day |