A day of jellyfish, sandwich, cosplay and pancakes "We are funny jellyfish, we look like watermelons. "The world celebrates the day of the jellyfish. They are considered one of the oldest inhabitants of the seas and oceans; They live on the planet for more than 500 million years. They have no vertebrae, they have a transparent body, and they themselves consist of 95-98% water. Did you know that the largest jellyfish are up to 37 meters long and weigh 200 kg? It's a holiday for the calculator too. The history of its appearance is interesting and diverse - since ancient times, people have tried to simplify their lives using counting devices. Ancient civilizations, such as the inhabitants of Babylon, used the abacus, a tool for performing simple calculations. The first mechanical calculators appeared in the 17th century, but electronic calculators were invented in the 1960s. Sandwich day has arrived. It is known that as early as the 1st century, the Babylonian Jew Hillel (considered the teacher of the Messiah) introduced the Passover tradition of wrapping a mixture of chopped apples and nuts mixed with spices in a piece of matzah. And in the Middle Ages, people liked to serve boiled meat on large pieces of stale bread. So you know the best way to start your morning. Today is also cosplay day. Cosplay is the art of becoming your favorite movie, game, anime or comic book character. The costumes take months to sew, armor glued to foam, wigs designed with the precision of a jeweler, and then they also learn to move like heroes. If you think cosplay is not for you, remember your New Year's bunny costume in kindergarten. You are already an experienced cosplayer. You can celebrate another holiday in a delicious way - Pancake Day. Abundant with kefir, thin with milk, with apple, pumpkin or zucchini, with sour cream, jam or honey: every family has its own recipe and its grandmother, who prepares them best. It is best to celebrate the holiday in the kitchen. Bake a stack of pancakes for dinner, and eat the first one, traditionally in a lump, right next to the stove. Hilarion Day in our national calendar.