Observed annually on March 31st, National Crayon Day is a day to celebrate the invention of crayons and the joy of coloring. ... That's because Crayola has a tendency to retire old crayon colors on this day.
"Oranges and Lemons" is a traditional English nursery rhyme, folksong, and singing game .... found in other parts of England, including Shropshire and Derby, where they were sung on festival days, on which bells would also have been rung.
National Bunsen Burner Day is observed every March 31st. This day honors the birthday of German chemist Robert Wilhelm Eberhard von Bunsen. Named after Robert Bunsen, a Bunsen burner is a common piece of laboratory equipment that produces a single open gas flame which is used for heating, sterilization and combustion.
Bunsen Burner Day on March 31 celebrates the inventor of the Bunsen Burner, German chemist Robert Wilhelm Eberhard von Bunsen. ... The most important contribution of Robert Bunsen, one that changed chemistry labs all over the world, was the Bunsen Burner. ... A staple in all chemistry labs ...