January 18th, 2023
Observed annually on January 18, National Thesaurus Day pays homage to Peter Mark Roget, the author of the famed "Roget's Thesaurus," who was born on January 18, 1779. Thesauruses are invaluable tools in writing. They offer suggestions on synonyms (and antonyms) , which are words that expand vocabulary and make writing more vibrant.
Source: mentalfloss.com/article/90809/10-fascinating-facts-about-thesaurus