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Intercalation (timekeeping)

Intercalation or embolism in timekeeping is the insertion of a leap day, week, or month into some calendar years to make the calendar follow the seasons or moon phases. Lunisolar calendars may require intercalations of days or months.

Solar calendars
The solar or tropical year does not have a whole number of days (it is about 365.24 days), but a calendar year must have a whole number of days. The most common way to reconcile the two is to vary the number of days in the calendar year.

In solar calendars, this is done by adding an extra day ("leap day" or "intercalary day") to a common year of 365 days, about once every four years, creating a leap year that has 366 days (Julian, Gregorian and Indian national calendars).

The Decree of Canopus, issued by the pharaoh Ptolemy III Euergetes of Ancient Egypt in 239 BC, decreed a solar leap day system; an Egyptian leap year was not adopted until 25 BC, when the Roman Emperor Augustus instituted a reformed Alexandrian calendar.

In the Julian calendar, as well as in the Gregorian calendar, which improved upon it, intercalation is done by adding an extra day to February in each leap year. In the Julian calendar this was done every four years. In the Gregorian, years divisible by 100 but not 400 were exempted in order to improve accuracy. Thus, 2000 was a leap year; 1700, 1800, and 1900 were not.

Epagomenal days are days within a solar calendar that are outside any regular month. Usually five epagomenal days are included within every year (Egyptian, Coptic, Ethiopian, Mayan Haab' and French Republican Calendars), but a sixth epagomenal day is intercalated every four years in some (Coptic, Ethiopian and French Republican calendars).

The Solar Hijri calendar, used in Iran, is based on solar calculations and is similar to the Gregorian calendar in its structure, and hence the intercalation, with the exception that its epoch the Hijrah.

The Bahá'í calendar includes enough epagomenal days (usually 4 or 5) before the last month (علاء, ʿalāʾ) to ensure that the following year starts on the March equinox. These are known as the Ayyám-i-Há.

Lunisolar calendars
The solar year does not have a whole number of lunar months (it is about 365/29.5 = 12.37 lunations), so a lunisolar calendar must have a variable number of months per year. Regular years have 12 months, but embolismic years insert a 13th "intercalary" or "leap" month or "embolismic" month every second or third year. Whether to insert an intercalary month in a given year may be determined using regular cycles such as the 19-year Metonic cycle (Hebrew calendar and in the determination of Easter) or using calculations of lunar phases (Hindu lunisolar and Chinese calendars). The Buddhist calendar adds both an intercalary day and month on a usually regular cycle.

Lunar calendars
In principle, lunar calendars do not employ intercalation because they do not seek to synchronise with the seasons, and the motion of the moon is astronomically predictable. But religious lunar calendars rely on actual observation.

The Lunar Hijri calendar, the purely lunar calendar observed by most of Islam, depends on actual observation of the first crescent of the moon and thus has no intercalation. Each month still has either 29 or 30 days, but due to the variable method of observations employed, there is usually no discernible order in the sequencing of 29- or 30-day month lengths. Traditionally, the first day of each month is the day (beginning at sunset) of the first sighting of the hilal (crescent moon) shortly after sunset. If the hilal is not observed immediately after the 29th day of a month (either because clouds block its view or because the western sky is still too bright when the moon sets), then the day that begins at that sunset is the 30th.

The tabular Islamic calendar, used in Iran, has 12 lunar months that usually alternate between 30 and 29 days every year, but an intercalary day is added to the last month of the year 12 times in a 33-year cycle. Some historians also linked the pre-Islamic practice of Nasi' to intercalation.

Leap seconds
The International Earth Rotation and Reference Systems Service can insert or remove leap seconds from the last day of any month (June and December are preferred). These are sometimes described as intercalary.

Other uses
ISO 8601 includes a specification for a 52/53-week year. Any year that has 53 Thursdays has 53 weeks; this extra week may be regarded as intercalary.

The xiuhpōhualli (year count) system of the Aztec calendar had five intercalary days after the eighteenth and final month, the nēmontēmi, in which the people fasted and reflected on the past year.

title: Intercalation (timekeeping)


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Intercourse

Intercourse may refer to:
 * Interpersonal communication, talk, any kind of human communication and/or interaction

Places

 * Intercourse, Alabama, United States
 * Intercourse, Pennsylvania, United States
 * Intercourse Island, Western Australia

Books

 * Intercourse (book), a 1987 book by Andrea Dworkin
 * InterCourses: An Aphrodisiac Cookbook, a 1997 book by Martha Hopkins and Randall Lockridge with photography by Ben Fink

Music

 * Intercourse (The Tokens album), a 1971 album by American vocal group the Tokens
 * Intercourse (S'Express album), a 1991 studio album by English dance music act S'Express
 * "Intercourse", a 2020 song by Megan Thee Stallion featuring Popcaan and Mustard from Good News

Other arts and media

 * The Intercourse, an arts center in Brooklyn, New York, United States
 * Intercourse (magazine), a literary magazine published in Montreal from 1966 to 1971

license: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/4.0/

title: Intercourse


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Ink

Ink is a gel, sol, or solution that contains at least one colorant, such as a dye or pigment, and is used to color a surface to produce an image, text, or design. Ink is used for drawing or writing with a pen, brush, reed pen, or quill. Thicker inks, in paste form, are used extensively in letterpress and lithographic printing.

Ink can be a complex medium, composed of solvents, pigments, dyes, resins, lubricants, solubilizers, surfactants, particulate matter, fluorescents, and other materials. The components of inks serve many purposes; the ink's carrier, colorants, and other additives affect the flow and thickness of the ink and its dry appearance.

History
Many ancient cultures around the world have independently discovered and formulated inks due to the need to write and draw. The recipes and techniques for the production of ink are derived from archaeological analyses or from written texts itself. The earliest inks from all civilizations are believed to have been made with lampblack, a kind of soot, easily collected as a by-product of fire.

Ink was used in Ancient Egypt for writing and drawing on papyrus from at least the 26th century BC. Egyptian red and black inks included iron and ocher as pigments, in addition to phosphate, sulfate, chloride, and carboxylate ions, with lead also used as a drier.

The earliest Chinese inks may date to four millennia ago, to the Chinese Neolithic Period. These included plant, animal, and mineral inks, based on such materials as graphite; these were ground with water and applied with ink brushes. Direct evidence for the earliest Chinese inks, similar to modern inksticks, is found around 256 BC, in the end of the Warring States period; being produced from soot and animal glue. The preferred inks for drawing or painting on paper or silk are produced from the resin of the pine trees between 50 and 100 years old. The Chinese inkstick is produced with a fish glue, whereas Japanese glue (膠 nikawa) is from cow or stag.

India ink was invented in China, though materials were often traded from India, hence the name. The traditional Chinese method of making the ink was to grind a mixture of hide glue, carbon black, lampblack, and bone black pigment with a pestle and mortar, then pour it into a ceramic dish to dry. To use the dry mixture, a wet brush would be applied until it reliquified. The manufacture of India ink was well-established by the Cao Wei dynasty (220–265 AD). Indian documents written in Kharosthi with ink have been unearthed in Xinjiang. The practice of writing with ink and a sharp pointed needle was common in early South India. Several Buddhist and Jain sutras in India were compiled in ink.

Cephalopod ink, known as sepia, turns from dark blue-black to brown on drying, and was used as an ink in the Graeco-Roman period and subsequently. Black atramentum was also used in ancient Rome; in an article for The Christian Science Monitor, Sharon J. Huntington describes these other historical inks: "About 1,600 years ago, a popular ink recipe was created. The recipe was used for centuries. Iron salts, such as ferrous sulfate (made by treating iron with sulfuric acid), were mixed with tannin from gallnuts (they grow on trees) and a thickener. When first put to paper, this ink is bluish-black. Over time it fades to a dull brown."

"Scribes in medieval Europe (about AD 800 to 1500) wrote principally on parchment or vellum. One 12th century ink recipe called for hawthorn branches to be cut in the spring and left to dry. Then the bark was pounded from the branches and soaked in water for eight days. The water was boiled until it thickened and turned black. Wine was added during boiling. The ink was poured into special bags and hung in the sun. Once dried, the mixture was mixed with wine and iron salt over a fire to make the final ink."

The reservoir pen, which may have been the first fountain pen, dates back to 953, when Ma'ād al-Mu'izz, the caliph of Egypt, demanded a pen that would not stain his hands or clothes, and was provided with a pen that held ink in a reservoir.

In the 15th century, a new type of ink had to be developed in Europe for the printing press by Johannes Gutenberg. According to Martyn Lyons in his book Books: A Living History, Gutenberg's dye was indelible, oil-based, and made from the soot of lamps (lamp-black) mixed with varnish and egg white. Two types of ink were prevalent at the time: the Greek and Roman writing ink (soot, glue, and water) and the 12th century variety composed of ferrous sulfate, gall, gum, and water. Neither of these handwriting inks could adhere to printing surfaces without creating blurs. Eventually an oily, varnish-like ink made of soot, turpentine, and walnut oil was created specifically for the printing press.

Types

Ink formulas vary, but commonly involve two components:
 * Colorants
 * Vehicles (binders)

Inks generally fall into four classes:
 * Aqueous
 * Liquid
 * Paste
 * Powder

Pigments
Pigment inks are used more frequently than dyes because they are more color-fast, but they are also more expensive, less consistent in color, and have less of a color range than dyes. Pigments are solid, opaque particles suspended in ink to provide color. Pigment molecules typically link together in crystalline structures that are 0.1–2 μm in size and comprise 5–30 percent of the ink volume. Qualities such as hue, saturation, and lightness vary depending on the source and type of pigment.

Dyes
Dye-based inks are generally much stronger than pigment-based inks and can produce much more color of a given density per unit of mass. However, because dyes are dissolved in the liquid phase, they have a tendency to soak into paper, potentially allowing the ink to bleed at the edges of an image.

To circumvent this problem, dye-based inks are made with solvents that dry rapidly or are used with quick-drying methods of printing, such as blowing hot air on the fresh print. Other methods include harder paper sizing and more specialized paper coatings. The latter is particularly suited to inks used in non-industrial settings (which must conform to tighter toxicity and emission controls), such as inkjet printer inks. Another technique involves coating the paper with a charged coating. If the dye has the opposite charge, it is attracted to and retained by this coating, while the solvent soaks into the paper. Cellulose, the wood-derived material most paper is made of, is naturally charged, and so a compound that complexes with both the dye and the paper's surface aids retention at the surface. Such a compound is commonly used in ink-jet printing inks.

An additional advantage of dye-based ink systems is that the dye molecules can interact with other ink ingredients, potentially allowing greater benefit as compared to pigmented inks from optical brighteners and color-enhancing agents designed to increase the intensity and appearance of dyes.

Dye-based inks can be used for anti-counterfeit purposes and can be found in some gel inks, fountain pen inks, and inks used for paper currency. These inks react with cellulose to bring about a permanent color change. Dye based inks are used to color hair.

Health and environmental aspects
There is a misconception that ink is non-toxic even if swallowed. Once ingested, ink can be hazardous to one's health. Certain inks, such as those used in digital printers, and even those found in a common pen can be harmful. Though ink does not easily cause death, repeated skin contact or ingestion can cause effects such as severe headaches, skin irritation, or nervous system damage. These effects can be caused by solvents, or by pigment ingredients such as p-Anisidine, which helps create some inks' color and shine.

Three main environmental issues with ink are:
 * Heavy metals
 * Non-renewable oils
 * Volatile organic compounds

Some regulatory bodies have set standards for the amount of heavy metals in ink. There is a trend toward vegetable oils rather than petroleum oils in recent years in response to a demand for better environmental sustainability performance.

Ink uses up non-renewable oils and metals, which has a negative impact on the environment.

Carbon
Carbon inks were commonly made from lampblack or soot and a binding agent such as gum arabic or animal glue. The binding agent keeps carbon particles in suspension and adhered to paper. Carbon particles do not fade over time even when bleached or when in sunlight. One benefit is that carbon ink does not harm paper. Over time, the ink is chemically stable and therefore does not threaten the paper's strength. Despite these benefits, carbon ink is not ideal for permanence and ease of preservation. Carbon ink tends to smudge in humid environments and can be washed off surfaces. The best method of preserving a document written in carbon ink is to store it in a dry environment (Barrow 1972).

Recently, carbon inks made from carbon nanotubes have been successfully created. They are similar in composition to traditional inks in that they use a polymer to suspend the carbon nanotubes. These inks can be used in inkjet printers and produce electrically conductive patterns.

Iron gall (common ink)
Iron gall inks became prominent in the early 12th century; they were used for centuries and were widely thought to be the best type of ink. However, iron gall ink is corrosive and damages paper over time (Waters 1940). Items containing this ink can become brittle and the writing fades to brown. The original scores of Johann Sebastian Bach are threatened by the destructive properties of iron gall ink. The majority of his works are held by the German State Library, and about 25% of those are in advanced stages of decay (American Libraries 2000). The rate at which the writing fades is based on several factors, such as proportions of ink ingredients, amount deposited on the paper, and paper composition (Barrow 1972:16). Corrosion is caused by acid catalyzed hydrolysis and iron(II)-catalysed oxidation of cellulose (Rouchon-Quillet 2004:389).

Treatment is a controversial subject. No treatment undoes damage already caused by acidic ink. Deterioration can only be stopped or slowed. Some think it best not to treat the item at all for fear of the consequences. Others believe that non-aqueous procedures are the best solution. Yet others think an aqueous procedure may preserve items written with iron gall ink. Aqueous treatments include distilled water at different temperatures, calcium hydroxide, calcium bicarbonate, magnesium carbonate, magnesium bicarbonate, and calcium hyphenate. There are many possible side effects from these treatments. There can be mechanical damage, which further weakens the paper. Paper color or ink color may change, and ink may bleed. Other consequences of aqueous treatment are a change of ink texture or formation of plaque on the surface of the ink (Reibland & de Groot 1999).

Iron gall inks require storage in a stable environment, because fluctuating relative humidity increases the rate that formic acid, acetic acid, and furan derivatives form in the material the ink was used on. Sulfuric acid acts as a catalyst to cellulose hydrolysis, and iron (II) sulfate acts as a catalyst to cellulose oxidation. These chemical reactions physically weaken the paper, causing brittleness.

Indelible ink

Indelible means "un-removable". Some types of indelible ink have a very short shelf life because of the quickly evaporating solvents used. India, Mexico, Indonesia, Malaysia and other developing countries have used indelible ink in the form of electoral stain to prevent electoral fraud. Election ink based on silver nitrate was first applied in the 1962 Indian general election, after being developed at the National Physical Laboratory of India.

The election commission in India has used indelible ink for many elections. Indonesia used it in its last election in Aceh. In Mali, the ink is applied to the fingernail. Indelible ink itself is not infallible as it can be used to commit electoral fraud by marking opponent party members before they have chances to cast their votes. There are also reports of "indelible" ink washing off voters' fingers in Afghanistan.

title: Ink


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Islamabad Capital Territory

The Islamabad Capital Territory (ICT; ) is the only federal territory of Pakistan that is centred around Islamabad, the capital of Pakistan. Located on the northern edge of the Pothohar Plateau and at the foot of the Margalla Hills, in the northwestern area of the Punjab region, the territory shares borders with the province of Khyber Pakhtunkhwa in the west and with the province of Punjab in the remaining directions. It covers an area of 906.5 km2 and according to the 2023 national census, has a population of over 1 million in the city proper, while over 2 million in the whole territory. The territory is represented in the National Assembly by NA-52, NA-53, and NA-54 constituencies and by four seats in the Senate.

History
In 1960, land was transferred from Rawalpindi District of Punjab province to replace Karachi Federal Capital Territory and establish Pakistan's new capital. According to the 1960s master plan, the Capital Territory included Rawalpindi, and was to be composed of the following parts:
 * Rawalpindi, 259 km2
 * Islamabad Urban, 220.15 km2
 * Margalla Hills, 220.15 km2
 * Islamabad Rural, 466.20 km2

However, Rawalpindi was eventually excluded from the Islamabad master plan in the 1980s.

Zones
Islamabad is subdivided into five zones:

 * Zone I: Designated for urban development and federal government institutions
 * Zone II: Designated for urban development
 * Zone III: Designated for rural development
 * Zone IV: Designated for rural development
 * Zone V: Designated for rural development

Union councils
Islamabad Capital Territory comprises urban and rural areas. The rural consists of 23 union councils, comprising 133 villages, while urban has 27 union councils.

Seasons
The climate of Islamabad has a humid subtropical climate (Köppen: Cwa), with five seasons: winter (November–February), spring (March and April), summer (May and June), rainy monsoon (July and August), and autumn (September and October).

Temperatures
The temperatures range from 13 C in January to 38 C in June. The hottest month is June, where average highs routinely exceed 38 C, while the coolest month is January. The highest recorded temperature was 46.6 C on 23 June 2005 while the lowest temperature was -6 C on 17 January 1967. Winters generally feature dense fog in the mornings and sunny afternoons. In the city, temperatures stay mild, with snowfall over the higher elevations points on nearby hill stations, notably Murree and Nathia Gali.

Precipitation
The wettest month is July, with heavy rainfalls and evening thunderstorms with the possibility of cloudburst and flooding. Highest monthly rainfall of 743.3 mm was recorded during July 1995. On 23 July 2001, Islamabad received a record breaking 620 mm of rainfall in just 10 hours. It was the heaviest rainfall in Islamabad in the past 100 years and the highest rainfall in 24 hours as well. The city has also experienced snowfall on a number of occasions. Islamabad's micro-climate is regulated by three artificial reservoirs: Rawal, Simli, and Khanpur Dam. The latter is located on the Haro River near the town of Khanpur, about 40 km from Islamabad. Simli Dam is 30 km north of Islamabad.

Vegetation
Around 220 acre of the city consists of the Margalla Hills National Park, while the Loi Bher Forest is situated along the Islamabad Highway, covering an area of 1087 acre.

Civic administration
The main administrative authority of the city is Islamabad Capital Territory Administration with some help from Metropolitan Corporation Islamabad and Capital Development Authority (CDA), which oversees the planning, development, construction, and administration of the city. Islamabad Capital Territory is divided into eight zones: Administrative Zone, Commercial District, Educational Sector, Industrial Sector, Diplomatic Enclave, Residential Areas, Rural Areas and Green Area.

Islamabad city is divided into five major zones: Zone I, Zone II, Zone III, Zone IV, and Zone V. Out of these, Zone IV is the largest in area. All sectors of Ghouri Town (1, 2, 3, VIP, 5, 4-A, 4-B, 4-C, 5-A, 5-B and sector 7) are located in this zone. Zone I consists mainly of all the developed residential sectors, while Zone II consists of the under-developed residential sectors. Each residential sector is identified by a letter of the alphabet and a number, and covers an area of approximately 4 square kilometres. The sectors are lettered from A to I, and each sector is divided into four numbered sub-sectors.

Sectors
Series A, B, and C are still underdeveloped. The D series has seven sectors (D-11 to D-17), of which only sector D-12 is completely developed. This series is located at the foot of Margalla Hills. The E Sectors are named from E-7 to E-17. Many foreigners and diplomatic personnel are housed in these sectors. In the revised Master Plan of the city, CDA has decided to develop a park on the pattern of Fatima Jinnah Park in sector E-14. Sectors E-8 and E-9 contain the campuses of Bahria University, Air University, and the National Defence University. The F and G series contains the most developed sectors. F series contains sectors F-5 to F-17; some sectors are still under-developed. F-5 is an important sector for the software industry in Islamabad, as the two software technology parks are located here. The entire F-9 sector is covered with Fatima Jinnah Park. The Centaurus complex will be one of the major landmarks of the F-8 sector. G sectors are numbered G-5 through G-17. Some important places include the Jinnah Convention Center and Serena Hotel in G-5, the Red Mosque in G-6, and the Pakistan Institute of Medical Sciences, the largest medical complex in the capital, located in G-8.

The H sectors are numbered H-8 through H-17. The H sectors are mostly dedicated to educational and health institutions. National University of Sciences and Technology covers a major portion of sector H-12. The I sectors are numbered from I-8 to I-18. With the exception of I-8, which is a well-developed residential area, these sectors are primarily part of the industrial zone. Currently two sub-sectors of I-9 and one sub-sector of I-10 are used as industrial areas. CDA is planning to set up Islamabad Railway Station in Sector I-18 and Industrial City in sector I-17. Zone III consists primarily of the Margalla Hills and Margalla Hills National Park. Rawal Lake is in this zone. Zone IV and V consist of Islamabad Park, and rural areas of the city. The Soan River flows into the city through Zone V.

Language
Before the establishment of Islamabad, the area was almost entirely inhabited by tribal Punjabi population, who mostly spoke their native Punjabi language's Pothwari dialect.

After Islamabad's establishment, people from all around Pakistan shifted here which led to a diverse demographics. But, Punjabis still constitute the single largest ethnic population in the territory.

Religion
Islam is the largest and most practiced religion in the territory, with over 95% of the population adhereing to the faith. Christianity is the second largest religion and forms 4.1% of the population. Other minorites, like Hindus, form just 0.02% of the population, while Ahmedis make up 0.34%. Other minorities, like Sikhs and Jews, form just 0.03% combined.

Islamabad-Rawalpindi metropolitan area
When the master plan for Islamabad was drawn up in 1960, Islamabad and Rawalpindi, along with the adjoining areas, was to be integrated to form a large metropolitan area called Islamabad/Rawalpindi Metropolitan Area. The area would consist of the developing Islamabad, the old colonial cantonment city of Rawalpindi, and Margalla Hills National Park, including surrounding rural areas. However, Islamabad city is part of the Islamabad Capital Territory, while Rawalpindi is part of Rawalpindi District, which is part of province of Punjab.

Economy
Islamabad is a net contributor to the Pakistani economy, as whilst having only 0.8% of the country's population, it contributes 1% to the country's GDP. Islamabad Stock Exchange, founded in 1989, is Pakistan's third largest stock exchange after Karachi Stock Exchange and Lahore Stock Exchange. The exchange has 118 members with 104 corporate bodies and 18 individual members. The average daily turnover of the stock exchange is over 1 million shares. As of 2012, Islamabad LTU (Large Tax Unit) was responsible for Rs 371 billion in tax revenue, which amounts to 20% of all the revenue collected by Federal Board of Revenue.

Islamabad has seen an expansion in information and communications technology with the addition two Software Technology Parks, which house numerous national and foreign technological and information technology companies. The tech parks are located in Evacuee Trust Complex and Awami Markaz. Awami Markaz houses 36 IT companies while Evacuee Trust house 29 companies. Call centres for foreign companies have been targeted as another significant area of growth, with the government making efforts to reduce taxes by as much as 10% to encourage foreign investments in the information technology sector. Most of Pakistan's state-owned companies like PIA, PTV, PTCL, OGDCL, and Zarai Taraqiati Bank Ltd. are based in Islamabad. Headquarters of all major telecommunication operators such as PTCL, Mobilink, Telenor, Ufone, and China Mobile are located in Islamabad. Being an expensive city, the prices of most of fruits, vegetable and poultry items increased in Islamabad during the year 2015-2020

Airport
Islamabad is connected to major destinations around the world through the Islamabad International Airport. The airport is the largest in Pakistan, handling 9 million passengers per annum. The airport was built at a cost of $400 million and opened on 3 May 2018, replacing the former Benazir Bhutto International Airport. It is the first greenfield airport in Pakistan with an area of 3600 acre.

Metrobus
The Rawalpindi-Islamabad Metrobus is a 24 km bus rapid transit system that serves the twin cities of Rawalpindi and Islamabad in Pakistan. It uses dedicated bus lanes for all of its route covering 24 bus stations. Islamabad is well connected with other parts of the country through car rental services such as Alvi Transport Network and Pakistan Car Rentals.

Motorways
All major cities and towns are accessible through regular trains and bus services running mostly from the neighbouring city of Rawalpindi. Lahore and Peshawar are linked to Islamabad through a network of motorways, which has significantly reduced travelling times between these cities. M-2 Motorway is 367 km long and connect Islamabad and Lahore. M-1 Motorway connects Islamabad with Peshawar and is 155 km long. Islamabad is linked to Rawalpindi through the Faizabad Interchange, which has a daily traffic volume of about 48,000 vehicles.

Education
Islamabad has the highest literacy rate of Pakistan at 95%. Islamabad also has some of Pakistan's major universities, including Quaid-i-Azam University, the International Islamic University, and the National University of Sciences and Technology and Pakistan Institute of Engineering and Applied Sciences

Private School Network Islamabad is working for private educational institutions. The president of PSN is Dr. Muhammad Afzal Babur from Bhara Kahu. PSN is divided into eight zones in Islamabad. In Tarlai Zone Chaudhary Faisal Ali from Faisal Academy Tarlai Kalan is Zonal General Sectary of PSN.

Quaid-e-Azam University has several faculties. The institute is located in a semi-hilly area, east of the Secretariat buildings and near the base of Margalla Hills. This Post-Graduate institute is spread over 1,705 acre. The nucleus of the campus has been designed as an axial spine with a library as its center. Other universities include the following:

 * Bahria University
 * Air University
 * Quaid-e-Azam University
 * Allama Iqbal Open University (AIOU)
 * Alkauthar Islamic University
 * COMSATS Institute of Information Technology (CIIT)
 * Capital University of Science and Technology (CUST) [Formally Mohammad Ali Jinnah University, Islamabad Campus]
 * Federal Urdu University of Arts, Science & Technology (FUUAST)
 * National University of Sciences and Technology (NUST)
 * National Defense University, Islamabad(NDU)
 * National University of Modern Languages (NUML)
 * Institute of Space Technology
 * International Islamic University
 * Institute of Cost and Management Accountants of Pakistan (ICMAP)
 * Institute of Chartered Accountants of Pakistan (ICAP)
 * Pakistan Institute of Development Economics (PIDE)
 * Pakistan Institute of Engineering and Applied Sciences (PIEAS)
 * Shifa College of Medicine
 * Foundation University Islamabad (FUI)
 * National University of Computer & Emerging Sciences(FAST-NUCES)
 * Riphah International University
 * University of Lahore
 * Center for Advanced Studies in Engineering
 * Preston University Islamabad Campus
 * Iqra University Islamabad Campus
 * Shaheed Zulfiqar Ali Bhutto Institute of Science and Technology (ZABIST)
 * Hamdard University Islamabad Campus

Sports
Islamabad United became the first ever team to win Pakistan Super League in 2016. And now the federal team Is participating in the Pakistan Cup.

title: Islamabad Capital Territory