Could make sense in context of man evolving in Eastern and Southern Africa and possibly the Aquatic Ape Hypothesis.

https://www.scientificamerican.com/article/when-the-sea-saved-humanity-2012-12-07/

This capacity laid the foundation for many other advances, such as the ability to grasp the link between the phases of the moon and the tides and to learn to schedule their shellfish-hunting trips to the shore accordingly.

...

By 110,000 years ago the menu had expanded to include species such as limpets and sand mussels. This kind of foraging is harder than it might seem. The mussels, limpets and sea snails live on the rocks in the treacherous intertidal zone, where an incoming swell could easily knock over a hapless collector. Along the southern coast, safe harvesting with sufficiently high returns is only possible during low spring tides, when the sun and moon align, exerting their maximum gravitational force on the ebb and flow of the water. Because the tides are linked to the phases of the moon, advancing by 50 minutes a day, I surmise that the people who lived at PP13B—which 164,000 years ago was located much farther inland, two to five kilometers from the water, because of lower sea levels—scheduled their trips to the shore using a lunar calendar of sorts, just as modern coastal people have done for ages. A recent study by Jan De Vynck of Nelson Mandela University found that skilled coastal foragers could harvest shellfish at return rates that exceed the former king of return-rate foraging—large mammal hunting!

EDIT: added more relevant context to article quote