Historical clue formulations

• 180 — 2022-01-16
• Reverse order? — 2013-11-22
• 180° turn — 2004-10-19
• One-eighty — 2001-05-11
• One-eighty — 2000-09-01
• Drill instructor's 41-Across — 1999-12-06
• 180 (degrees) — 1996-07-03
• Political surprise — 1995-08-25