gaseous ammonia is generally referred to as anhydrous ammonia to distinguish it from household ammonia, which is an ammonium hydroxide aqueous solution. gaseous hydrogen chloride is generally referred to as anhydrous to distinguish it from the more commonly used 37% w/w solution in water.
20th century. The total solar eclipse of June 8, 1918 crossed the United States from Washington State to Florida. This path is roughly similar to the August 21, 2017 total solar eclipse and was the last time totality crossed the nation from the Pacific to the Atlantic.
MONDAY, AUGUST 21, 2017 | Begins: 11:58 a.m., Totality: 1:27 p.m., Ends: 2:54 p.m. On August 21, a rare, total solar eclipse will sweep across the continental U.S. for the first time since 1918, and Nashville will be the biggest city in its path.