Question

What is the standard time of India with reference to Greenwich Mean Time?
A. $5.30$ hours slow
B. 11 hours fast
C. $5:30$ hrs fast
D. 11 hours slow

Answer 1

Hint: If in India it’s $22:52$ IST then in Greenwich it is $5:21$ PM. It is named from its unique age at the Royal Greenwich Observatory, is adjusted to Coordinated Universal Time, and called either Greenwich Mean Time or British Summer Time as suitable for the season.

Complete answer:
India's time region is UTC/GMT (Coordinated Universal Time/Greenwich Mean Time) $ + 5.5$ hours. It's alluded to as Indian Standard Time (IST). What's uncommon is that there is just a one-time region over the entire of India. The time region is determined by the longitude of 82.5° E. at Shankargarh Fort in Mirzapur (in the Allahabad locale of Uttar Pradesh), which was picked as the focal meridian for India. It's additionally essential to Note: is that Daylight Saving Time doesn't work in India.

Indian Standard time (IST) is the time region noticed all through India, with a period counterbalance of UTC$ + 05:30$. India doesn't notice sunshine sparing time or other occasional changes. On various occasions before, it has been determined in various ways, including being determined from noon; as a result, it can't be utilized to indicate an exact time except if a setting is given. English speakers frequently use GMT as an equivalent word for Coordinated Universal Time (UTC). For route, it is viewed as identical to UT1 (the cutting edge type of mean sunlight based time at $0^\circ $ longitude); however, this significance can contrast with UTC by up to $0.9$s.

The term GMT ought not subsequently to be utilized for certain specialized purposes requiring exactness. Due to Earth's lopsided precise speed in its curved circle and its hub tilt, early afternoon ($12:00:00$) GMT is seldom the specific second the Sun crosses the Greenwich meridian and arrives at its most Note:worthy point in the sky there. This occasion may happen as long as 16 minutes prior to or evening GMT, an error determined by the condition of time. Early afternoon GMT is the yearly normal (for example "mean") snapshot of this occasion, which represents "signify" in "Greenwich Mean Time".

Thus, option (C) is correct.

Note: The time at which Sun passes the Prime Meridian at the Royal Observatory Greenwich is the Greenwich Mean Time.