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The 'Greenwich Mean Time' (GMT) is located at which longitudinal degree?
0 degree
90 degree East
90 degree West
180 degree
0 degree
Greenwich Mean Time (GMT) is defined by the Prime Meridian, which passes through the Royal Observatory in Greenwich, London. This specific line of longitude is designated as 0 degree and serves as the reference point for all time zones across the globe.
Greenwich Mean Time (GMT) is defined by the Prime Meridian, which passes through the Royal Observatory in Greenwich, London. This specific line of longitude is designated as 0 degree and serves as the reference point for all time zones across the globe.
The Prime Meridian (0 degree longitude) and the International Date Line (180 degree longitude) are the two primary geographic reference lines used to define global time and date synchronization.
The 0 degree longitude line is formally known as the Prime Meridian.
The earth rotates 360 degrees in 24 hours, meaning every 15 degrees of longitude represents a one-hour difference.
Indian Standard Time (IST) is calculated based on 82.5 degrees East longitude, which is 5 hours and 30 minutes ahead of GMT.
The Prime Meridian was officially adopted as the global reference point at the International Meridian Conference held in Washington, D.C. in 1884.
Option B (90 degree East) is a longitude that passes through parts of Russia, China, and the Bay of Bengal, and is not a reference for standard time.
Option C (90 degree West) is a longitude that passes through North America and is not used for global time standard calculations.
Option D (180 degree) is known as the International Date Line, where the date changes by exactly one day as one crosses it.
A is correct тАФ The Greenwich Mean Time (GMT) is established at the Prime Meridian, which is defined as 0 degree longitude.
When studying Geography, always memorize the difference between the Prime Meridian (0 degrees, longitude, time reference) and the Equator (0 degrees, latitude, climate reference), as examiners frequently swap these in questions.