The 747-400 is the second-most recent version of the Boeing 747 aircraft family, having been superseded by the more economical and advanced Boeing 747-8.Following its introduction in 1969, the Boeing 747 became a major success with airlines and the flying public.y early 1984, company officials had identified five development objectives for the latest 747 upgrade: new technologies, an enhanced interior, a 1,000 nautical miles (1,900 km) range increase, more efficient engines, and a 10 percent reduction in operating cost.
The midway point would be 46.5 days from June 21, which is Aug 6th (same day we dropped the bomb on Hiroshima for you history nuts). Technically because of the half day, the mid-way point could fall in the early hours of Aug 7th if the summer solstice was later in the day on June 21.
Northwest Aquatic Center will be open Memorial Weekend (May 28, 29 & 30), then close and reopen on June 4, 2016 when all other pools and aquatic centers open. Teachout Aquatic Center will remain open through August 23, 2016, then close and reopen on weekends August 27 & 28, and Labor Day Weekend (September 3, 4 & 5).