[tz] Flat-earthers and time zones
eggert at cs.ucla.edu
Fri Jan 26 17:18:50 UTC 2018
Patrice Scattolin wrote:
> A better question to ask is when circular earth became dominant belief.
If by "dominant" you mean "known by educated people in the West", I would say
that this occurred well before 200 B.C. And by "dominant" I mean really
dominant: there was no real controversy about whether the earth was flat, as
virtually every educated person on record wrote that it was round. (The idea
that the ancients thought the world flat is a modern myth.)
By the third century B.C. people in the West realized that clock settings varied
by longitude. Perhaps some ancient Roman or Greek geographer even developed a
precursor to tzdb, though I don't know of any such effort that survived.
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