What happened in the 1880s?
๐ Greenwich Meridian Established (1884): Standardizing global time zones.
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Further Reading
International Meridian Conference - Wikipedia (wikipedia.org)
What is Greenwich Mean Time (GMT) - and why does it matter? (co.uk)
THE CENTENARY OF THE PRIME MERIDIAN AND OF ... (jhuapl.edu)
Weird Science: The Prime Meridian and Time Zones (hawaii.edu)
International Meridian Conference (1884) - The Greenwich Meridian (thegreenwichmeridian.org)
Prime meridian (Greenwich) - Wikipedia (wikipedia.org)
What is the Prime Meridian and why is it in Greenwich? (co.uk)
Who determined that there should be exactly 86400 seconds in a day? (quora.com)
aistudio-txlege-tweets/tools/tweet_corpus.txt at master - GitHub (github.com)