Correct Answer : 4th January
World Braille Day is observed annually on 4th January, highlights the importance of Braille as a means of communication for partially sighted and blind people. The day has been marked by the United Nations since 2019.
World Braille Day also marks the birth anniversary of Louis Braille, who was born on 4 January, 1809. The French educator invented the Braille system, after being blinded at a young age.