oa MNASSA : Monthly Notes of the Astronomical Society of South Africa - Time



From the earliest days, time has boon connected with sunrise and sunset. Midway between sunrise and sunset the, sun bears neither east nor west, that is, it is on the meridian. This is a well-defined instant and, as soon as pointers had been set up in the meridian, was used by astronomers to mark the commencement of a solar day.


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