Q1
What is local time based on?
AThe sun's position at a specific longitude
BGovernment decisions only
CRandom assignment
DOcean currents
SSCClass 8 (SSC)Geography (भूगोल)Ch 1 · Topic 1
Local Time and Standard Time
Local time varies based on longitude, while standard time is set uniformly for a region or country, important for coordinating activities.
Core concept
Local time is based on the exact position of the sun at a specific longitude, meaning places at different longitudes have different local times.
How it works
Earth is divided into 24 time zones, each roughly 15 degrees of longitude wide, corresponding to the 24-hour day.
Why it matters
Standard time is a uniform time set for an entire region or country, avoiding confusion from constantly changing local times.
Key detail
India uses Indian Standard Time (IST), based on 82.5°E longitude, uniformly across the country despite its geographic width.
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Quick notes
• Local time: based on sun's position at longitude.
• Different longitudes have different local times.
• Earth divided into 24 time zones.
• Each zone ~15 degrees longitude wide.
• Standard time: uniform for a region/country.
• Avoids confusion from changing local times.
• India uses IST, based on 82.5°E longitude.
• Applied uniformly despite geographic width.