Historical clue formulations

• Garment left in a cloakroom — 2019-04-10
• Chesterfield, e.g. — 2005-01-28
• Winter wear — 2004-03-31
• Cold comfort? — 2002-03-10
• Chesterfield, e.g. — 1999-09-10
• Winter wear — 1994-05-21