Historical clue formulations

• "Fortnight" singer, to fans — 2026-09-06
• T-Swift, by another nickname — 2026-05-17
• When doubled, a pop nickname — 2024-10-26
• When repeated, nickname for Time's 2023 Person of the Year — 2024-06-02
• Scotland's Firth of ___ — 2024-05-09
• Scotland's longest river — 2018-05-30
• Scotland's Firth of ___ — 2018-05-08
• Scotland's longest river — 2018-03-11
• Scotland's longest river — 2018-02-18
• "The ___ Bridge Disaster" (McGonagall poem) — 2015-03-14
• Scotland's longest river — 2011-10-28
• Scotland's Firth of ___ — 2011-04-24
• It flows from a loch to a firth — 2010-10-02
• Scotland's Firth of ___ — 2010-09-07
• Scotland's Firth of ___ — 2010-03-04
• Scotland's longest river — 2009-05-23
• Scotland's Firth of ___ — 2006-09-14
• Longest river of Scotland — 2005-03-18
• Scotland's Firth of ___ — 2004-05-02
• Longest river in Scotland — 2004-04-09