Sobriety of mind and good memory are associated with the activity of neurons in the brain, which must be constantly trained. Traditionally, the holiday is celebrated by solving mathematical problems, assembling puzzles, playing Rubik's cubes and solving puzzles.

Russia includes many regions that have a distinctive culture, are proud of their national traditions and linguistic diversity. One of them is Dagestan. The peoples of the North Caucasus, their traditions and customs are the main value of the multinational republic.

The human body needs a daily supply of vitamins, minerals and trace elements. One of the most important is iodine, which is responsible for the production of thyroid hormones. Its deficiency leads to the development of hypothyroidism, diffuse goiter, endemic cretinism and other dangerous diseases.

One of the most popular building materials appeared approximately 2,200 years ago. The material, which is characterized by high strength and astringent effect, is still used today as a fastening agent in the construction of building structures. The date of the holiday was not chosen by chance. On October 21, 1824, Scotsman Joseph Aspdin registered a patent for a quickly hardening material with high performance characteristics.

Scientists claim that the accessory that modern people use to protect themselves from rain and sun rays originated in ancient China. In Europe, umbrellas gained popularity in the 18th century. For a long time they were considered a ladies' trinket, which, together with gloves and a handbag, complemented the created fashionable image.

Mexican cuisine, and with it nachos, are included in the UNESCO World Intangible Cultural Heritage List. The appetizer was named after the nickname of the head waiter from the town of Piedras Negras, whom everyone called Nacho. A holiday has been established in honor of the snack.

World Singing Day

Home Movie Day

International Repair Day

Sweets Day in the USA (Sweet Day, Sweetest Day)

Trafalgar Day in the UK

Apple Day in the UK

Day of Remembrance for the Victims of World War II in Serbia

Every year on October 21, the Orthodox Church and all believers remember all the righteous deeds of Saints Tryphon and Pelageya. According to popular legends, October 21 was also called Pochinki, since from that day on, trees were burned and cut down in the forests to build new huts and to prepare land for agricultural fields.

Orthodox holidays on October 21:

Memorial Day of St. Taisia ​​of Egypt

Cathedral of Vyatka Saints

Memorial Day of Venerable Pelagia of Antioch