Historical clue formulations

• Period of one's prime — 2024-08-12
• Prime time — 2022-09-03
• The early 20th century, for vaudeville — 2017-11-01
• Period of one's prime — 2009-08-17
• Prime time — 2006-09-05
• Prime — 2006-03-26
• The best of times — 2005-10-11
• Prime time — 2005-06-18
• Golden period — 2004-04-26
• Best of times — 2003-04-29
• Period of greatest success — 2003-02-17
• Golden age — 1999-10-29
• The best of times — 1998-07-16
• Golden years — 1995-07-16