In many countries, Teachers' Days are intended to be special days for the appreciation of teachers; World Teachers' Day is celebrated across the world on October 5. Ever since the importance of teachers has been recognized by UNESCO, by adopting the “Recommendation concerning the status of teachers”, World Teachers' Day has been celebrated annually. This includes celebrations to honor the teachers for their special contribution in a particular field area or the community in general.

The idea of celebrating Teachers' Day took ground independently in many countries during the 20th century; in most cases, they celebrate a local educator or an important milestone in education (for example, Argentina commemorates Domingo Faustino Sarmiento's death on September 11 since 1915, while India celebrates Dr. Sarvepalli Radhakrishnan's birthday on September 5 since 1962). These two factors explain why almost all countries celebrate this day on different dates, unlike many other International Days.

You may note that 11 countries celebrate a common Teachers' Day on February 28: Morocco, Algeria, Tunisia, Libya, Egypt, Jordan, Saudi Arabia, Yemen, Bahrain, UAE, and Oman.

Operation Sea Lion (German: Unternehmen Seelöwe) was Germany's plan to invade the United Kingdom during the Second World War, beginning in 1940. To have had any chance of success, however, the operation would have required air and naval supremacy over the English Channel. With the German defeat in the Battle of Britain, Sea Lion was postponed indefinitely on 17 September 1940 and never carried out.

By early November 1939, Adolf Hitler had decided on forcing a decision in the West by invading Belgium, the Netherlands and France. With the prospect of the Channel ports falling under Kriegsmarine (German Navy) control and attempting to anticipate the obvious next step that might entail, Grand Admiral (Großadmiral) Erich Raeder (head of the Kriegsmarine) instructed his operations officer, Kapitän Hans Jürgen Reinicke, to draw up a document examining "the possibility of troop landings in England should the future progress of the war make the problem arise." Reinicke spent five days on this study and set forth the following prerequisites:

Teacher's Highland Cream is a brand of blended scotch whisky produced in Glasgow by the American company Beam Inc.

In 1830, William Teacher took advantage of the new "Excise Act" and began selling his whisky. From 1832 he was selling it from his wife's grocery shop in Glasgow. By 1856, with help from his sons, he was granted a licence for consumption and opened his own dram shop. William died in 1876, leaving his two sons William Jr. and Adam in charge. They moved the business to St. Enoch Square where it remained until 1991.

Teacher's opened their Ardmore single malt facility in 1898, ensuring a guaranteed supply of scotch for their Teacher's Highland Cream blend. With the end of Prohibition in the United States, Teacher's sent its first shipment on the Cunard steamer "Scythia".

Teacher's acquired the Glendronach distillery in 1957, to meet the growing demand for blended scotch. With this increase in demand, Teacher's built a modern blending and bottling plant in Glasgow in 1962. During 1976, William Teacher & Sons Ltd. joined Allied Distillers.