The waning of sexual desire is sometimes considered inevitable in a long-term relationship, but it is unclear whether that is truly the case or whether it is a function of age or familiarity. Low sexual desire can often be treated.
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.
Solar eclipse of July 16, 2186. There will be a solar eclipse on July 16, 2186, which will be the longest total eclipse for thousands of years.