Bunsen Burner Day takes place on March 31, 2021. The holiday commemorates the birthday of the inventor of the Bunsen burner: chemist Robert Wilhelm Eberhard von Bunsen was born on March 31, 1811. 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. The gas can be natural gas (which is mainly methane) or a liquefied petroleum gas, such as propane, butane, or a mixture of both.
Bunsen Burner Day is celebrated in different ways. Some even compose songs with lyrics such as: "Just one spark is all that's needed / To start this show of sweet combustion. / That's its penultimate function. / Just one light to wake my blue angel of fire. Bunsen burner / It's the flame that never dies. / My bunsen Burner / You light up the sky in my lab" (by Blegen/Hallock/Roper). (With material from: Wikipedia)