Historical clue formulations

• Seeming eternities — 2026-02-11
• Oodles of time — 2026-01-15
• Seeming eternities — 2025-09-29
• A seeming eternity — 2025-07-23
• Metaphor for a tedious tract of time — 2025-06-28
• Quite a long time — 2025-06-23
• Many ages — 2025-05-21
• Time on end — 2025-04-18
• So, so, so long — 2025-01-21
• Quite some time — 2024-08-22
• An eternity — 2024-06-22
• Ages and ages — 2024-04-30
• Galactic time spans — 2024-01-30
• Periods longer than eras — 2022-10-25
• Forever and a day, say — 2022-09-19
• Long stretches — 2022-06-22
• Seemingly forever — 2022-06-12
• Many, many, many moons — 2022-01-09
• Like, forever! — 2021-12-27
• A long, long time — 2021-10-30
• Seemingly forever — 2021-09-07
• Long runs? — 2021-08-15
• Millennia — 2021-07-09
• Long periods — 2020-10-18
• Many millennia — 2020-05-27
• Very long stretches of time — 2020-04-13
• Long stretches — 2020-03-29
• Earth's longest time divisions, geologically — 2019-12-09
• Long stretches — 2019-05-10
• Ages and ages — 2019-04-26
• Practically an eternity — 2019-02-20
• Ages and ages — 2019-01-30
• Many, many, many, many, many moons — 2019-01-28
• Countless centuries — 2018-12-14
• Immensely long stretches — 2018-12-03
• Forever and a day — 2018-11-06
• Ages and ages — 2018-08-08
• They go to great lengths — 2018-07-24
• Forever and ever — 2017-12-31
• Volcanoes develop over them — 2017-12-28
• Years and years and years — 2017-12-25
• Ages and ages — 2017-10-02
• Very long spans — 2017-09-03
• Forever and a day — 2017-01-18
• Ages and ages — 2016-12-11
• Many, many years — 2016-12-07
• Stars exist over them — 2016-08-30
• Many millennia — 2016-05-02
• Huge spans — 2016-03-27
• Life span of a star — 2016-03-23