Valentine tank According to the most popular one, the design was presented to the War Office on St. Valentine's Day, 14 February 1940, although some sources say that the design was submitted on Valentine's Day 1938 or 10 February 1938. White notes that "incidentally" Valentine was the middle name of Sir John V. Carden, the man who was responsible for many tank designs including that of the Valentine's predecessors, the A10 and A11. Another version says that Valentine is an acronym for Vickers-Armstrong Ltd Elswick & (Newcastle-upon) Tyne. The "most prosaic" explanation according to David Fletcher is that it was just an
Geologists Day for summer field work and expeditions. Geologists Day is traditionally celebrated in almost all geological and mining organizations of the former Soviet Union with festivities starting at the end of preceding week. With tens of thousands of geologists from the former Soviet Union working around the world, the tradition of celebrating the Geologists Day is becoming more international. In addition to geologists, many others involved in related fields also consider this day as their professional holiday and celebrate it. Geologists Day Geologists Day is a professional holiday of geologists, geophysicists and geochemists. It is traditionally celebrated on the first Sunday