Historical clue formulations

• Japan Airlines hub [1934, 1938, 1982, 2006] — 2026-06-10
• International airport serving Tokyo — 2025-05-28
• Tokyo's airport — 2021-06-02
• Airport serving greater Tokyo — 2018-04-26
• Hub for All Nippon Airways — 2016-06-17
• International airport near Tokyo — 2016-03-23
• Airport near Tokyo — 2009-12-14
• Tokyo's airport — 2009-09-20
• Airport where 91-Down flies — 2009-02-08
• Main international airport of Japan — 2007-01-07
• Airport near Tokyo — 2001-02-15