If you had 5 less hours in your day, what would you cut out? ⌛ 🌍
that suggests Earth went through a billion-year period during the mid-Proterozoic , where days remained at a stable 19 hours long.
"Much like the oceanic tide bulges in the direction of the Moon, the atmospheric tide bulges toward the Sun. But given the orbital arrangement of the 3-body system, where the Moon's tide pulls on the Earth, acting to decelerate its rotation, the solar ride actually pushes the Earth forward, accelerating its rotation.
You can then simply count the number of layers per month and calculate the number of hours in an ancient day. The trouble with this method is that such tidal records are rare and are disputed by geologists as being accurate.
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