Question

how did people calculated time before the invention of meridians and parallels

Answer 1

Explanation:

One of the earliest of all devices to tell time was the sundial. The sundial is looked on as being a form of sun-powered clock. ... This shadow clock or sundial permitted one to measure the passage of hours within a day. Another very early form of clock to tell the time was the water clock.

so this was how they calculated time I hope you find it helpful

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