The author writes as if for adults it was far in the past (their youth) that they ate simply when they were hungry, not regulated by clocks. But what did the ad

The author writes as if for adults it was far in the past (their youth) that they ate simply when they were hungry, not regulated by clocks. But what did the adults and roman society do on cloudy days or dark seasons? Did they have some kind of more expensive or less accurate back up technology for darker or cloudy days? Did cloudy days imply a group of "clock people" turning hour glasses? Perhaps water clocks? Perhaps people working in the roman baths also ran water clocks? Was entrance to roman baths free? How long could one stay in the roman baths? Perhaps their aquaducts was more important to them than only for roman baths and sanitary infrastructure, but also for timekeeping on cloudy days?