Historical clue formulations

• Feature of many hospital roofs — 2025-01-31
• Landing site — 2023-03-26
• Special touchdown point? — 2015-11-28
• Takeoff spot for many a traffic reporter — 2010-09-25
• Where some touchdowns are made — 2010-01-09
• Feature of many a hospital rooftop — 2007-01-28
• Rooftop feature, perhaps — 2003-05-04