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Why is standard time considered necessary ?​

User Swamy
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Answer:

Because time varies with change in longitudes

User Aerilys
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Answer:Generally, standard time agrees with the local mean time at some meridian that passes through the region, often near the centre of the region. Historically, standard time was established during the 19th century to aid weather forecasting and train travel. Applied globally in the 20th century, the geographical regions became time zones.

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User Karthik Andhamil
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