Greenwich Mean Time (GMT) marks the beginning of the time zone on the globe, and is the time in any country measuring the number of hours ahead or behind GMT. Greenwich is located near which of the following cities?

• Greenwich is a borough in London, England, located on the south bank of the River Thames.

• It is the site of the Royal Observatory, which was founded in 1675 by King Charles II.

• The Prime Meridian (0° longitude) passes through this observatory, serving as the reference point for the world's time zones.

• Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory and was adopted as the global standard for timekeeping in 1884 at the International Meridian Conference.

• According to NCERT Geography (Class 6), all places to the east of Greenwich are ahead of GMT, while those to the west are behind it.

Information Booster:

• India's Standard Time (IST) is calculated based on the 82°30' E longitude, which passes through Mirzapur (near Prayagraj).

• IST is exactly 5 hours and 30 minutes ahead of Greenwich Mean Time (GMT +5:30).

• The International Date Line is located on the opposite side of the globe from the Prime Meridian at approximately 180° longitude.

Additional Knowledge:

Amsterdam (Option B) * This is the capital of the Netherlands.

• While it is in the same general region of Europe, it follows Central European Time (CET), which is typically GMT +1.

Chicago (Option C) * A major city in the United States (Illinois).

• It is located in the Central Time Zone (CT), which is usually 6 hours behind GMT.

New York (Option D) * A major city in the United States located on the East Coast.

• It follows Eastern Time (ET), which is usually 5 hours behind GMT.