Historical clue formulations

• Part of URL — 2026-04-29
• Tracking device — 2021-01-22
• Map with a "You are here" arrow — 2018-04-17
• G.P.S. device, e.g. — 2009-08-13
• Global positioning system, e.g. — 2008-03-07
• G.P.S. device, at times — 2006-01-27
• Successful detective — 1996-10-26