Hong Kong International Airport, date of construction
The Wikipedia entry (acquired June 28, 2018) for the Hong Kong International Airport requires a citation for the fact:
"Construction of the new airport began in 1991."
Imagery from NASA's Landsat 5 satellite confirms that initial construction began in late 1991. The Landsat 5 Multipsectral Scanner collected data between 1984-2013. The images below show available cloud-free images between Jan 1989 through Feb 2011.