Question: Når lettet første passasjerflyet
Answer: 1914-1-1; 01 01 1914; 01/01/1914; 1914 january 01; 1914 01 01; 1914 january, 01; 01 january 1914; 01-01-1914; 1914-01-01; 1914-01-01; 01 01 1914; 01/01/1914; 1914 january 01; 1914 01 01; 1914 january, 01; 01 january 1914; 01-01-1914; 1914-01-01