Date of construction.

The vacation was founded by the decree of the Soviet President's Supreme Soviet President on September 6, 1955 and was held every year on the second Sunday of August. In 2025, it fell on August 10.
The builder is one of the oldest professions in the world. Today, about 2 million Russians are recruited in this industry. Thanks to them, new residential areas and production complexes, as well as subjects of social infrastructure, transportation and energy are being built.
International biology day.
The unofficial vacation of this environmentally friendly fuel has been established to commemorate the first time. On August 10, 1893, in the German city of Augsburg, the first public protest on diesel engines operating in peanut oil was held. He was created by a German engineer and inventor Rudolf Diesel in the 1890s.
Biodiselle is an environmentally friendly fuel for the engine, obtained by chemical treatment of vegetable or animal fat chemicals. In Europe, rap is most commonly used, in the US and Africa – soy, in Asia – coconut or palm oil. In addition, vegetable oils are used, animal fat, castor oil, fish oil, etc. are used as biofuels.
350 years ago (1675), King Charles II ordered the first stone of the Greenwich Observatory.
Charles II Stuart, knowing that the Paris Astronomy was opened in France, decided to keep up with Louis XIV, and issued a decree on the start of building his observatory. To find the menstrual degrees, to improve navigation and astronomy, we decided to build an observatory in our park in Greenwich, in a high place near our castle, with a residential building for our astronomers and its assistant, the document said.
The observatory was built in less than a year. Her project was developed by British architect and Mathematician Christopher Ren. Construction cost 520 pounds. The first director of the Greenwich Observatory is astronomer John Flestid.
525 years ago (1500), the island of Madagascar was opened.
In the spring of 1500, the ship of the Portuguese sailor Disha Disha, as part of the Kabral fleet, is aiming for India. Not far from Cape of Good Hope, they fell into a storm, so four ships were killed, and the Diega Diash ship was lagged behind the rest of Flotilla. He went out of the course, crossed South Africa and avoided too far to the east.
Tourists on August 10 have passed some lands. Diash called it San Lorenso (to honor St. Lawrence), but this guy did not take root.
In 1501, he returned to Portugal and talked about his discovery. The first accurate information about Madagascar was used by the Italian mapist Alberto Kantino. The earliest and quite true image of the island was released on the map he drew.