Historical clue formulations

• Paradise — 2023-07-22
• Felicity — 2022-04-30
• Ignorance, perhaps — 2020-11-19
• Marital ___ — 2020-11-17
• Pure joy — 2020-07-08
• Heaven — 2017-11-09
• Ignorance, so they say — 2017-09-10
• What ignorance is, they say — 2017-03-13
• Euphoria — 2016-07-12
• Marital ___ — 2016-01-05
• Seventh heaven — 2012-04-30
• Paradise — 2010-02-13
• State in Elysium — 2009-03-21
• Nirvana — 2008-10-03
• Cloud-nine state — 2008-02-06
• Rapture — 2008-01-26
• Felicity — 2004-12-26
• Seventh heaven — 2004-02-27
• Ignorance, they say — 2002-05-29
• Ecstasy — 1998-12-14
• Heaven — 1997-11-28
• Rapture — 1995-11-27
• Ignorance, proverbially — 1995-11-01
• Felicity — 1994-07-09
• English composer — 1994-01-30