People with darker skin colors require more exposure time. Another point to remember is that this natural method does not work equally well at all latitudes and seasons, or in all people. If you are uncertain of the amount of sunshine you need, you can have your vitamin D levels tested.
The 'official' War in Europe began in Poland on September 1, 1939. Some historians have argued that the war began much earlier with the Spanish Civil War but September 1 â¦ st, 1939 is the date accepted when the U.K., France, and Commonwealth nations declared war on Germany in response to the Polish invasion.
By a well established convention the dates are generally given as 1 September 1939 to 2 September 1945. <br /> <br /> The Second World War has start and end points that differ slightly, depending on national perspectives and on what part of the world is being described. In Europe, the war began with Hitler's attack on Poland, September 1st, 1939. Britain and France had defense treaties with Poland regarding a possible German attack, and declared war on Germany two days later. The US was drawn into the war late in 1941 after Pearl Harbor.