Historical clue formulations

• Turn-of-century year — 2012-10-06
• Start of the third century — 2011-08-30
• Year the emperor Decius was born — 2009-06-06
• Third-century year — 2009-01-23
• Early third-century year — 2006-11-05
• Start of the third century — 2002-08-16
• Third-century date — 2001-08-01
• Year in the papacy of St. Zephyrinus — 2001-03-31
• 201 on a slab — 2000-12-03
• Early third-century date — 1999-11-14
• 201, classically — 1998-12-16
• Third-century date — 1997-08-29
• Year in Septimius Severus's reign — 1996-09-20
• Third-century date — 1996-04-07
• Year in Severus's reign — 1995-08-19
• LXVII x III — 1994-07-17
• LXVII x lll — 1994-01-14