Historical clue formulations

• Home of Switzerland's oldest university — 2023-05-06
• Swiss city on the Rhine — 2019-05-29
• Third-largest city of Switzerland — 2018-01-19
• Swiss city on the Rhine — 2014-05-04
• Swiss city that borders France and Germany — 2014-04-19
• City where Erasmus taught — 2009-07-03
• Bernoulli family birthplace — 2007-10-26
• Swiss city on the Rhine — 2006-04-04
• City on the Rhine — 2001-08-14
• Swiss city on the Rhine — 2001-03-13
• Home to many Swiss banks — 2000-06-18
• Swiss city — 1999-12-31
• Swiss city — 1996-05-21
• City on the Rhine — 1995-10-22
• Swiss city on the Rhine — 1994-04-12