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Time In India
India uses only one time zone (even though it spans two geographical time zones) across the whole nation and all its territories, called Indian Standard Time (IST), which equates to UTC+05:30, i.e. five and a half hours ahead of Coordinated Universal Time (UTC). India does not currently observe daylight saving time (DST or summer time). The official time signal is given by the Time and Frequency Standards Laboratory. The IANA time zone database contains only one zone pertaining to India, namely ''Asia/Kolkata''. The date and time notation in India shows some peculiarities. Background History Ancient India The 4th century CE astronomical treatise Surya Siddhanta postulated a spherical Earth. The book described a custom of the prime meridian, or zero longitude, as passing through '' Avanti'', the ancient name for the historic city of Ujjain, and ''Rohitaka'', the ancient name for Rohtak (), a city near the Kurukshetra. The day used by ancient Indian astronomers be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kurukshetra
Kurukshetra () is a city and administrative headquarters of Kurukshetra district in the Indian state of Haryana. It is also known as Dharmakshetra ("Realm of duty") and as the "Land of the Bhagavad Gita". Legends According to the Puranas, Kurukshetra is a region named after King Kuru, the ancestor of Kauravas and Pandavas in the Kuru kingdom, as depicted in epic ''Mahabharata''. The Kurukshetra War of the ''Mahabharata'' is believed to have taken place here. Thaneswar, whose urban area is merged with Kurukshetra, is a pilgrimage site with many locations attributed to ''Mahabharata''. In the Vedas, Kurukshetra is described not as a city but as a region (" kshetra" means "region" in Sanskrit). The boundaries of Kurukshetra correspond roughly to the central and western parts of the state of Haryana and Punjab. According to the Taittiriya Aranyaka 5.1.1., the Kurukshetra region is south of Turghna (Srughna/Sugh in Sirhind, Punjab), north of Khandava (Delhi and Mewat regi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calcutta
Kolkata, also known as Calcutta (List of renamed places in India#West Bengal, its official name until 2001), is the capital and largest city of the Indian States and union territories of India, state of West Bengal. It lies on the eastern bank of the Hooghly River, west of the border with Bangladesh. It is the primary Financial centre, financial and Commercial area, commercial centre of Eastern India, eastern and Northeast India, northeastern India. Kolkata is the list of cities in India by population, seventh most populous city in India with an estimated city proper population of 4.5 million (0.45 crore) while its metropolitan region Kolkata Metropolitan Area is the List of million-plus agglomerations in India, third most populous metropolitan region of India with a metro population of over 15 million (1.5 crore). Kolkata is regarded by many sources as the cultural capital of India and a historically and culturally significant city in the historic Bengal, region of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bombay
Mumbai ( ; ), also known as Bombay ( ; its official name until 1995), is the capital city of the Indian States and union territories of India, state of Maharashtra. Mumbai is the financial centre, financial capital and the list of cities in India by population, most populous city proper of India with an estimated population of 12.5 million (1.25 crore). Mumbai is the centre of the Mumbai Metropolitan Region, the List of largest cities, seventh-most populous metropolitan area in the world with a population of over 23 million (2.3 crore). Mumbai lies on the Konkan coast on the west coast of India and has a deep natural harbour. In 2008, Mumbai was named an Globalization and World Cities Research Network#Alpha, alpha world city. Mumbai has the List of cities by number of billionaires, highest number of billionaires out of any city in Asia. The seven islands that constitute Mumbai were earlier home to communities of Marathi language-speaking Koli people. For cent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Goldingham
John Goldingham (1767 - July 1849) was the first official astronomer of the Madras Observatory, appointed in 1802. Goldingham was also an architect and surveyor who headed the Madras Survey School which later grew into the Guindy Engineering College and then Anna University. Born in London in 1767, Goldingham was first in the service of William Petrie at his private observatory and then hired by astronomer-sailor Michael Topping as his assistant in 1788. John Goldingham was a Dane. His original name was Johannes Guldenheim. He succeeded Michael Topping as the Astronomer posted in Madras. Goldingham was put in charge of building an observatory in 1792, and later appointed as the Presidency Civil Engineer in 1800. Although a mathematician, he managed to learn both astronomy and engineering. He worked at around the same time as Colonel William Lambton, Lambton began the Trigonometrical Survey. From 1787 observations were made on the eclipses of Jupiter's satellites. Using the time ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sundial
A sundial is a horology, horological device that tells the time of day (referred to as civil time in modern usage) when direct sunlight shines by the position of the Sun, apparent position of the Sun in the sky. In the narrowest sense of the word, it consists of a flat plate (the ''dial'') and a gnomon, which casts a shadow onto the dial. As the Sun diurnal motion, appears to move through the sky, the shadow aligns with different hour-lines, which are marked on the dial to indicate the time of day. The ''style'' is the time-telling edge of the gnomon, though a single point or ''nodus'' may be used. The gnomon casts a broad shadow; the shadow of the style shows the time. The gnomon may be a rod, wire, or elaborately decorated metal casting. The style must be polar alignment, parallel to the axis of the Earth's rotation for the sundial to be accurate throughout the year. The style's angle from horizontal is equal to the sundial's geographical latitude. The term ''sundial'' can r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jaipur
Jaipur (; , ) is the List of state and union territory capitals in India, capital and the List of cities and towns in Rajasthan, largest city of the north-western States and union territories of India, Indian state of Rajasthan. , the city had a population of 3.1 million, making it the List of cities in India by population, tenth most populous city in the country. Located from the national capital New Delhi, Jaipur is also known as the ''Pink City'' due to the dominant color scheme of its buildings in the old city. Jaipur was founded in 1727 by Sawai Jai Singh, Sawai Jai Singh II, the Kachhwaha, Kachhwaha Rajput ruler of Amer, India, Amer, after whom the city is named. It is one of the earliest planned cities of modern India, designed by Vidyadhar Bhattacharya. During the British Raj, British colonial period, the city served as the capital of Jaipur State. After Independence of India, Indian independence in 1947, Jaipur became the capital of the newly formed state of Rajas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jai Singh II Of Amber
Sawai Jai Singh II (3 November 1688 – 21 September 1743), was the 30th Kachwaha Rajput ruler of the Kingdom of Amber, who later founded the fortified city of Jaipur and made it his capital. He became the ruler of Amber at the age of 11, after the untimely death of his father Mirza Raja Bishan Singh on 31 December 1699. Initially, Raja Jai Singh served as a vassal of the Mughal Empire. He was given the title of "''Sawai"'' by Mughal Emperor Aurangzeb before the siege of Khelna Fort in Deccan."Sawai" means one and a quarter times superior to his contemporaries. He received the title of "''Maharaja Sawai'', ''Raj Rajeshwar'', ''Shri Rajadhiraj'' " in the year 1723 which happened to be the reign of later Mughals under emperor Muhammad Shah; this was in addition to the title of "''Saramad-i-Raja-i-Hindustan"'', conferred on him on 21 April 1721.Sarkar, Jadunath (1994) A History of Jaipur, New Delhi: Orient Blackswan, , pp. 171, 173 In the later part of his life Sawai Jai Singh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jantar Mantar (Jaipur)
The Jantar Mantar is a collection of 19 astronomical instruments built by the Rajput king Sawai Jai Singh, the founder of Jaipur, Rajasthan. The monument was completed in 1734.The Jantar Mantar at Jaipur, India Portal to the Heritage of Astronomy, in partnership with UNESCO World Heritage Site It features the world's largest stone , and is a . I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Time
Solar time is a calculation of the passage of time based on the position of the Sun in the sky. The fundamental unit of solar time is the day, based on the synodic rotation period. Traditionally, there are three types of time reckoning based on astronomical observations: #Apparent solar time, apparent solar time and #Mean solar time, mean solar time (discussed in this article), and ''sidereal time'', which is based on the apparent motions of stars other than the Sun. Introduction A tall pole vertically fixed in the ground casts a shadow on any sunny day. At one moment during the day, the shadow will point exactly north or south (or disappear when and if the Sun moves directly overhead). That instant is called solar noon, ''local apparent noon'', or 12:00 local apparent time. About 24 hours later the shadow will again point north–south, the Sun seeming to have covered a 360-degree arc around Earth's axis. When the Sun has covered exactly 15 degrees (1/24 of a circle, both a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sidereal Time
Sidereal time ("sidereal" pronounced ) is a system of timekeeping used especially by astronomers. Using sidereal time and the celestial coordinate system, it is easy to locate the positions of celestial objects in the night sky. Sidereal time is a "time scale that is based on Earth's rate of rotation measured relative to the fixed stars". A sidereal day (also known as the sidereal rotation period) represents the time for one rotation about the planet axis relative to the stars. Viewed from the same location, a star seen at one position in the sky will be seen at the same position on another night at the same time of day (or night), if the day is defined as a sidereal day. This is similar to how the time kept by a sundial (Solar time) can be used to find the location of the Sun. Just as the Sun and Moon appear to rise in the east and set in the west due to the rotation of Earth, so do the stars. Both solar time and sidereal time make use of the regularity of Earth's rot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
