Historical clue formulations

• Capital with an airport named after Chopin — 2024-02-10
• Cold War pact city — 2022-06-05
• Site of a 1955 "Pact" — 2018-01-10
• City near where Chopin was born — 2017-10-15
• Poland's capital — 2015-10-12
• "The Pianist" setting — 2012-06-22
• Vistula River city — 2002-10-16
• Poland's capital — 2002-04-22
• 1955 pact city — 1999-07-13
• Poland's capital — 1996-08-12
• 1939 invasion site — 1995-10-15