Historical clue formulations

• End of the Greek alphabet — 2026-08-24
• Last Greek letter — 2026-07-27
• Symbol for ohms — 2026-01-29
• Final Greek letter — 2024-08-19
• Last letter of the Greek alphabet — 2024-04-08
• End of the Greek alphabet — 2024-04-02
• Longtime watch brand for James Bond — 2024-01-04
• Alpha's opposite — 2023-05-09
• Watch brand that's the end-all? — 2022-11-08
• Final Greek letter — 2022-09-26
• Lowest-ranking member of a group — 2022-06-04
• Watch brand for 007 — 2022-01-20
• The end — 2021-12-29
• The end of the Greek world? — 2021-11-30
• Last of the Greeks — 2021-07-16
• Symbol for 5-Across — 2021-07-07
• ___-3 fatty acids — 2021-07-06
• ___-3 — 2021-05-16
• Rolex rival — 2021-01-13
• Resistance figure — 2020-12-10
• Letter after phi, chi and psi — 2020-10-19
• ___-3 fatty acids — 2020-09-22
• Rolex competitor — 2020-03-28
• Final Greek letter — 2020-03-02
• Letter after phi, chi, psi ... — 2020-02-24
• Alpha's opposite — 2019-11-18
• Luxury Swiss watch — 2019-10-28
• Symbol of angular velocity — 2019-09-14
• End of fraternity row? — 2019-08-30
• Symbol of resistance — 2019-07-03
• Greek letter shaped like a horseshoe — 2019-04-08
• Horseshoe-shaped letter — 2019-02-26
• From alpha to ___ — 2018-12-03
• Big name in watches — 2018-12-02
• Lowercase letter resembling a "w" — 2018-10-13
• Alphabet ender — 2018-04-08
• The end — 2018-03-21
• Symbol for the resistance? — 2018-01-31
• Literally, "great O" — 2017-06-04
• Competitor of Cartier — 2017-05-19
• Series finale — 2017-01-21
• Last in a series — 2016-04-27
• The end — 2015-12-03
• 1970s-'80s Olds — 2015-07-11
• 15-Across's symbol, when turned upside down — 2014-12-18
• Symbol for ohms — 2014-08-31
• End of a Greek series — 2014-07-23
• What follows phi, chi, psi — 2014-07-14
• Resistance figure — 2013-08-31
• ___-3 fatty acid — 2013-07-24