In the
history of Islam
The history of Islam is believed, by most historians, to have originated with Muhammad's mission in Mecca and Medina at the start of the 7th century CE, although Muslims regard this time as a return to the original faith passed down by the Abr ...
, a ''muwaqqit'' (, more rarely ''mīqātī''; ) was an astronomer tasked with the
timekeeping
Time is the continuous progression of existence that occurs in an apparently irreversible succession from the past, through the present, and into the future. It is a component quantity of various measurements used to sequence events, to compa ...
and the regulation of
prayer times in an Islamic institution like a
mosque
A mosque ( ), also called a masjid ( ), is a place of worship for Muslims. The term usually refers to a covered building, but can be any place where Salah, Islamic prayers are performed; such as an outdoor courtyard.
Originally, mosques were si ...
or a
madrasa
Madrasa (, also , ; Arabic: مدرسة , ), sometimes Romanization of Arabic, romanized as madrasah or madrassa, is the Arabic word for any Educational institution, type of educational institution, secular or religious (of any religion), whet ...
. Unlike the
muezzin
The muezzin (; ), also spelled mu'azzin, is the person who proclaims the call to the daily prayer ( ṣalāt) five times a day ( Fajr prayer, Zuhr prayer, Asr prayer, Maghrib prayer and Isha prayer) at a mosque from the minaret. The muezzin ...
(reciter of the
call to prayer
A call to prayer is a summons for participants of a faith to attend a group worship or to begin a required set of prayers. The call is one of the History of telecommunication, earliest forms of telecommunication, communicating to people across gre ...
) who was usually selected for his piety and voice, a muwaqqit was selected for his knowledge and skill in astronomy.
Not all mosques had a muwaqqit. The office was first recorded in the late 13th century in the
Mosque of Amr ibn al-As
The Amr ibn al-As Mosque () is a mosque in Cairo, Egypt. Named after the Arab Muslim commander Amr ibn al-As, the mosque was originally built in 641–642 CE as the center of the newly founded capital of Egypt, Fustat. The original structure ...
in the
Mamluk Sultanate of Cairo and then spread to various parts of the
Muslim world
The terms Islamic world and Muslim world commonly refer to the Islamic community, which is also known as the Ummah. This consists of all those who adhere to the religious beliefs, politics, and laws of Islam or to societies in which Islam is ...
. Even then, many major mosques only relied on muezzins to determine prayer times using traditional methods, such as observing
shadow lengths and
twilight
Twilight is daylight illumination produced by diffuse sky radiation when the Sun is below the horizon as sunlight from the upper atmosphere is scattered in a way that illuminates both the Earth's lower atmosphere and also the Earth's surf ...
phenomena. The lack of historical sources and research makes it difficult to ascertain the specific functions and roles of the muwaqqit. There is uncertainty among
historians of science
The history of science covers the development of science from ancient times to the present. It encompasses all three major branches of science: natural, social, and formal. Protoscience, early sciences, and natural philosophies such as al ...
whether the muwaqqit was a specialised office whose holder dealt exclusively with astronomical matters, or if it was part of a broader role of a teacher (''
mudarris'') who also worked and taught in other fields.
During its peak in the fourteenth and the fifteenth centuries, prominent scientists held the post of muwaqqit. For example,
ibn al-Shatir
ʿAbu al-Ḥasan Alāʾ al‐Dīn bin Alī bin Ibrāhīm bin Muhammad bin al-Matam al-Ansari, known as Ibn al-Shatir or Ibn ash-Shatir (; 1304–1375) was an Arab astronomer, mathematician and engineer. He worked as '' muwaqqit'' (موقت, timek ...
(1304–1375) and
Shams al-Din al-Khalili (1320–1380) formed a team of muwaqqits in the
Umayyad Mosque
The Umayyad Mosque (; ), also known as the Great Mosque of Damascus, located in the old city of Damascus, the capital of Syria, is one of the largest and oldest mosques in the world. Its religious importance stems from the eschatological reports ...
of
Damascus
Damascus ( , ; ) is the capital and List of largest cities in the Levant region by population, largest city of Syria. It is the oldest capital in the world and, according to some, the fourth Holiest sites in Islam, holiest city in Islam. Kno ...
.
Syria
Syria, officially the Syrian Arab Republic, is a country in West Asia located in the Eastern Mediterranean and the Levant. It borders the Mediterranean Sea to the west, Turkey to Syria–Turkey border, the north, Iraq to Iraq–Syria border, t ...
and Egypt were the major centres of muwaqqit activity in these centuries, while the office spread to
Palestine
Palestine, officially the State of Palestine, is a country in West Asia. Recognized by International recognition of Palestine, 147 of the UN's 193 member states, it encompasses the Israeli-occupied West Bank, including East Jerusalem, and th ...
,
Hejaz
Hejaz is a Historical region, historical region of the Arabian Peninsula that includes the majority of the western region of Saudi Arabia, covering the cities of Mecca, Medina, Jeddah, Tabuk, Saudi Arabia, Tabuk, Yanbu, Taif and Al Bahah, Al-B ...
,
Tunis
Tunis (, ') is the capital city, capital and largest city of Tunisia. The greater metropolitan area of Tunis, often referred to as "Grand Tunis", has about 2,700,000 inhabitants. , it is the third-largest city in the Maghreb region (after Casabl ...
, and Yemen. The office continued to be recorded up to the nineteenth century, although muwaqqits produced fewer treatises and instruments than in earlier times. Today, mosques use prayer time-tables produced by religious or scientific agencies or clocks programmed for this purpose. These allow for the exact determination of prayer times without the specialised skills of a muwaqqit.
Background
Muslims observe
salah
''Salah'' (, also spelled ''salat'') is the practice of formal worship in Islam, consisting of a series of ritual prayers performed at prescribed times daily. These prayers, which consist of units known as ''rak'ah'', include a specific s ...
, the daily ritual prayer, at prescribed times based on the
hadith
Hadith is the Arabic word for a 'report' or an 'account f an event and refers to the Islamic oral tradition of anecdotes containing the purported words, actions, and the silent approvals of the Islamic prophet Muhammad or his immediate circle ...
or the tradition of
Muhammad
Muhammad (8 June 632 CE) was an Arab religious and political leader and the founder of Islam. Muhammad in Islam, According to Islam, he was a prophet who was divinely inspired to preach and confirm the tawhid, monotheistic teachings of A ...
(–632). Each day, there are five obligatory prayers with specific ranges of permitted times determined by daily astronomical phenomena. For example, the time for the
maghrib prayer
Maghrib () is one of the five mandatory salah (Islamic prayers), and contains three cycles (''rak'a''). If counted from midnight, it is the fourth one.
According to Shia and Sunni Muslims, the period for Maghrib prayer starts just after sun ...
starts after
sunset
Sunset (or sundown) is the disappearance of the Sun at the end of the Sun path, below the horizon of the Earth (or any other astronomical object in the Solar System) due to its Earth's rotation, rotation. As viewed from everywhere on Earth, it ...
and ends when the red
twilight
Twilight is daylight illumination produced by diffuse sky radiation when the Sun is below the horizon as sunlight from the upper atmosphere is scattered in a way that illuminates both the Earth's lower atmosphere and also the Earth's surf ...
has disappeared.
Because the start and end times for prayers are related to the solar
diurnal motion, they vary throughout the year and depend on the local latitude and longitude when expressed in
local time. The term ''mīqāt'' in the sense of "time of a prayer" is attested to in the
Quran
The Quran, also Romanization, romanized Qur'an or Koran, is the central religious text of Islam, believed by Muslims to be a Waḥy, revelation directly from God in Islam, God (''Allah, Allāh''). It is organized in 114 chapters (, ) which ...
and hadith, although the Quran does not explicitly define those times. The term ''ʻilm al-mīqāt'' refers to the study of determining prayer times based on the position of the Sun and the stars in the sky and has been recorded since the early days of Islam.
Before the muwaqqits appeared, the muezzin had been the office most associated with the regulation of the prayer times. The post can be traced back to Muhammad's lifetime and its role and history are well documented. The main duty of a muazzin is to recite the ''adhan'' to announce the beginning of a prayer time. Before the use of a
loudspeaker
A loudspeaker (commonly referred to as a speaker or, more fully, a speaker system) is a combination of one or more speaker drivers, an enclosure, and electrical connections (possibly including a crossover network). The speaker driver is an ...
, this was usually done from the top of a
minaret
A minaret is a type of tower typically built into or adjacent to mosques. Minarets are generally used to project the Muslim call to prayer (''adhan'') from a muezzin, but they also served as landmarks and symbols of Islam's presence. They can h ...
. The minaret provided the muezzin with a vantage point to observe phenomena such as sunset which marks the start time of maghrib.
Duties

The main duty of the muwaqqit was timekeeping and the regulation of daily prayer times in mosques, madrasas, or other institutions using astronomy and other exact sciences. At its zenith in the fourteenth and fifteenth centuries, major mosques often employed prominent astronomers as muwaqqits. In addition to regulating prayer times, they wrote treatises on astronomy, especially on timekeeping and the use of related instruments such as
quadrants and
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 ...
s. They were also responsible for other religious matters related to their astronomical expertise, such as the keeping of the
Islamic calendar
The Hijri calendar (), also known in English as the Islamic calendar, is a lunar calendar consisting of 12 lunar months in a year of 354 or 355 days. It is used to determine the proper days of Islamic holidays and rituals, such as the Ramad ...
and the determination of the
qibla
The qibla () is the direction towards the Kaaba in the Great Mosque of Mecca, Sacred Mosque in Mecca, which is used by Muslims in various religious contexts, particularly the direction of prayer for the salah. In Islam, the Kaaba is believed to ...
(the direction to Mecca used for prayers).
David A. King, a historian of astronomy, presents the muwaqqit as a specialised profession, a mosque astronomer "in the service of Islam" who produced a large body of treatises and instruments, even though their work did not necessarily influence the practices of the muezzins and the
fuqahā who largely used traditional methods. The knowledge of a muwaqqit was passed to his students who specifically intended to be the next generation of the profession. King's description is based on his research into the
primary works of the muwaqqits and contemporary Islamic legal texts.
On the other hand, historian of science,
Sonja Brentjes
Sonja Brentjes (born 1951) is a German history of science, historian of science, history of mathematics, historian of mathematics, and historian of cartography known for her work on mapmapking and mathematics in medieval Islam.
Education and care ...
, proposes that muwaqqit is to be seen as "only one facet of another persona, mostly that of a ''mudarris'' (teacher)". The astronomical keeping of prayer times as well as the construction and maintenance of a mosque's astronomical instruments were just a normal part of academic activities in Muslim cities of the time. Someone titled muwaqqit was also likely to be highly learned in other disciplines, including
fiqh
''Fiqh'' (; ) is the term for Islamic jurisprudence.[Fiqh](_blank)
Encyclopædia Britannica ''Fiqh'' is of ...
and
philosophy
Philosophy ('love of wisdom' in Ancient Greek) is a systematic study of general and fundamental questions concerning topics like existence, reason, knowledge, Value (ethics and social sciences), value, mind, and language. It is a rational an ...
. The discipline of ''ʻilm al-mīqāt'' was widely learned and not only by someone who aspired to be a muwaqqit; a muezzin could well have had an identical education as a muwaqqit. Brentjes' assessment is based on
secondary biographies of the muwaqqits during the Mamluk era, including the works of
al-Sakhawi
Shams al-Dīn Muḥammad ibn ‘Abd al-Raḥmān al-Sakhāwī (, 1428/831 AH – 1497/902 AH) was a reputable Shafi‘i Muslim hadith scholar and historian
A historian is a person who studies and writes about the past and is regarded as an ...
, a prominent 15th-century author and
hadith scholar
Hadith studies is the academic study of hadith, a literature typically thought in Islam, Islamic religion to be a record of the words, actions, and the silent approval of the Muhammad as transmitted through chains of narrators.
A major area of ...
. Both King and Brentjes say that it is difficult to ascertain the role of the muwaqqits due to the lack of research and historical sources on the topic.
Salary
Little information is available about the salary of the muwaqqits. King could only provide several figures given in ''waqfiyya''s or financial documents of mosques in fifteenth and sixteenth century Cairo. The Mosque of the Emir of Qanim paid a muwaqqit 200
dirham
The dirham, dirhem or drahm is a unit of currency and of mass. It is the name of the currencies of Moroccan dirham, Morocco, the United Arab Emirates dirham, United Arab Emirates and Armenian dram, Armenia, and is the name of a currency subdivisi ...
s (silver coin) per month, compared to 900 for an imam, 500 for a
khatib, 200 for a muezzin and 300 for a servant mentioned in the same document. Other figures King found were cumulative: 1400 dirham divided among about 16 muezzins and muwaqqits, and 600 dirham divided among an unknown number of muwaqqits. According to Brentjes, these remunerations were relatively low, leading a muwaqqit to take up other jobs at the same time, including teaching. The data presented by King is limited to one city and does not cover mosques with prominent muwaqqits, such as the
Umayyad Mosque
The Umayyad Mosque (; ), also known as the Great Mosque of Damascus, located in the old city of Damascus, the capital of Syria, is one of the largest and oldest mosques in the world. Its religious importance stems from the eschatological reports ...
in Damascus.
Relations with the muezzin
The responsibilities of a muwaqqit were related to those of the muezzins who announced the start time of a prayer by reciting the ''adhan''. Unlike the office of the muwaqqit which required special knowledge in astronomy, the muezzin were typically chosen for their piety and beautiful voice. Mosques did not always have muwaqqits. Even major mosques often relied on a muezzin's traditional knowledge to determine prayer times, such as observing shadow lengths for daytime prayers, twilight phenomena for night prayers, and
lunar stations for general timekeeping at night. Brentjes speculates that the muwaqqit might have evolved from a specialised muezzin, and that there might not have been a clear delineation between the two offices. Some celebrated muwaqqits, including
Shams al-Din al-Khalili and
ibn al-Shatir
ʿAbu al-Ḥasan Alāʾ al‐Dīn bin Alī bin Ibrāhīm bin Muhammad bin al-Matam al-Ansari, known as Ibn al-Shatir or Ibn ash-Shatir (; 1304–1375) was an Arab astronomer, mathematician and engineer. He worked as '' muwaqqit'' (موقت, timek ...
, were known to have once been muezzins, and many individuals held both offices simultaneously.
History
Unlike the muazzin whose history and origin has been well-studied, the origin of the ''muwaqqit'' is unclear. The earliest known record shows that the office already existed in the thirteenth century
Mamluk Sultanate
The Mamluk Sultanate (), also known as Mamluk Egypt or the Mamluk Empire, was a state that ruled Egypt, the Levant and the Hejaz from the mid-13th to early 16th centuries, with Cairo as its capital. It was ruled by a military caste of mamluks ...
. According to King, the first ''muwaqqit'' known by name was Abu al-Hasan ali ibn Abd al-Malik ibn Sim'un (died 685
AH or 1286/1287 CE), a ''muwaqqit'' in the
Mosque of Amr ibn al-As
The Amr ibn al-As Mosque () is a mosque in Cairo, Egypt. Named after the Arab Muslim commander Amr ibn al-As, the mosque was originally built in 641–642 CE as the center of the newly founded capital of Egypt, Fustat. The original structure ...
in
Fustat
Fustat (), also Fostat, was the first capital of Egypt under Muslim rule, though it has been integrated into Cairo. It was built adjacent to what is now known as Old Cairo by the Rashidun Muslim general 'Amr ibn al-'As immediately after the Mus ...
, Egypt for 30 years. His son Muhammad al-Wajih (died 701 AH or 1301/1302 CE) and grandson Muhammad al-Majd also served as ''muwaqqit'' there. At the same time, similar offices likely existed in
Al-Andalus
Al-Andalus () was the Muslim-ruled area of the Iberian Peninsula. The name refers to the different Muslim states that controlled these territories at various times between 711 and 1492. At its greatest geographical extent, it occupied most o ...
and the
Maghreb
The Maghreb (; ), also known as the Arab Maghreb () and Northwest Africa, is the western part of the Arab world. The region comprises western and central North Africa, including Algeria, Libya, Mauritania, Morocco, and Tunisia. The Maghreb al ...
with different names. In Al-Andalus, in the late 13th century, astronomers Ahmad and Husayn—father and son from the Ibn Baso family—computed prayer times for the Great Mosque of
Granada
Granada ( ; ) is the capital city of the province of Granada, in the autonomous communities of Spain, autonomous community of Andalusia, Spain. Granada is located at the foot of the Sierra Nevada (Spain), Sierra Nevada mountains, at the confluence ...
. Manuscripts refer to them with various titles, including ''al-muadhdhin al-mubarak'', ''al-imam al-mu'addil al-mubarak'', ''al-shaykh al-mu'addil'', ''amin al-awqat'', and ''muwaqqit''. The
University of al-Qarawiyyin
The University of al-Qarawiyyin (), also written Al-Karaouine or Al Quaraouiyine, is a university located in Fez, Morocco. It was founded as a mosque by Fatima al-Fihri in 857–859 and subsequently became one of the leading spiritual and educ ...
in
Fez employed the astronomer Muhammad al-Sanhaji () in a similar position with the title ''al-mu'addil''. A manual of professions from around 1300 by the Egyptian author
Ibn al-Ukhuwwa mentioned the post of the muazzin and its duties and requirements but did not mention the ''muwaqqit''.
In the 14th and 15th centuries
If the office of the ''muwaqqit'' indeed originated in Egypt, it soon spread to
Syria
Syria, officially the Syrian Arab Republic, is a country in West Asia located in the Eastern Mediterranean and the Levant. It borders the Mediterranean Sea to the west, Turkey to Syria–Turkey border, the north, Iraq to Iraq–Syria border, t ...
and
Palestine
Palestine, officially the State of Palestine, is a country in West Asia. Recognized by International recognition of Palestine, 147 of the UN's 193 member states, it encompasses the Israeli-occupied West Bank, including East Jerusalem, and th ...
. The
Ibrahimi Mosque in
Hebron
Hebron (; , or ; , ) is a Palestinian city in the southern West Bank, south of Jerusalem. Hebron is capital of the Hebron Governorate, the largest Governorates of Palestine, governorate in the West Bank. With a population of 201,063 in ...
employed the ''muwaqqit'' Ibrahim ibn Ahmad. In 1306, he made a copy of an astronomical work by Nasir al-Din ibn Sim'un (died 1337), a member of the same family as the early ''muwaqqits'' in Fustat. Another ''muwaqqit'',
Ibn al-Sarraj (), served in
Aleppo
Aleppo is a city in Syria, which serves as the capital of the Aleppo Governorate, the most populous Governorates of Syria, governorate of Syria. With an estimated population of 2,098,000 residents it is Syria's largest city by urban area, and ...
where he designed and created various astronomical instruments and wrote treatises about their construction and use.
Still in Syria, Ibn al-Shatir (1304–1375) led a team of ''muwaqqits'' in the Umayyad Mosque, Damascus. He wrote two
''zij''es (astronomical tables) and made
astrolabe
An astrolabe (; ; ) is an astronomy, astronomical list of astronomical instruments, instrument dating to ancient times. It serves as a star chart and Model#Physical model, physical model of the visible celestial sphere, half-dome of the sky. It ...
s and
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 ...
s. Apart from timekeeping, he also worked on planetary theories and wrote a treatise on the movements of the Sun, the moon, and the planets. He moved away from
Ptolemaic geocentrism and produced models which were still geocentric but were mathematically identical to those later proposed by
Copernicus
Nicolaus Copernicus (19 February 1473 – 24 May 1543) was a Renaissance polymath who formulated a mathematical model, model of Celestial spheres#Renaissance, the universe that placed heliocentrism, the Sun rather than Earth at its cen ...
(1473 – 1543). According to King, Ibn al-Shatir's works represent the "culmination" of planetary astronomy in the Islamic world. Ibn al-Shatir's colleague Shams al-Din al-Khalili (1320–1380), a ''muwaqqit'' of the
Yalbugha Mosque before joining the Umayyad Mosque, wrote prayer timetables for Damascus and tables for finding direction to Mecca from any locality. The activities of the ''muwaqqits'' were not universally approved of by Islamic jurists. The
qadi
A qadi (; ) is the magistrate or judge of a Sharia court, who also exercises extrajudicial functions such as mediation, guardianship over orphans and minors, and supervision and auditing of public works.
History
The term '' was in use from ...
(judge) of Damascus
Taj al-Din al-Subki
Abū Naṣr Tāj al-Dīn ʻAbd al-Wahhāb ibn ʿAlī ibn ʻAbd al-Kāfī al-Subkī (), or Tāj al-Dīn al-Subkī () or simply Ibn al-Subki (1327–1370) was a leading Sunni Islamic scholar based in Egypt and Levant. He was a highly regarded jur ...
denounced the ''muwaqqits'', whose ranks according to him were filled with astrologers (''munajjimun'') and magicians (''kuhhan''). Astrological topics were inevitably read by astronomers of the time because they were often included in astronomy textbooks, and a few ''muwaqqits'' were recorded to have studied astrology.
By the end of the fourteenth century, the activity of the ''muwaqqits'' had been recorded in Egypt, Syria, Palestine, the
Hejaz
Hejaz is a Historical region, historical region of the Arabian Peninsula that includes the majority of the western region of Saudi Arabia, covering the cities of Mecca, Medina, Jeddah, Tabuk, Saudi Arabia, Tabuk, Yanbu, Taif and Al Bahah, Al-B ...
(including
Mecca
Mecca, officially Makkah al-Mukarramah, is the capital of Mecca Province in the Hejaz region of western Saudi Arabia; it is the Holiest sites in Islam, holiest city in Islam. It is inland from Jeddah on the Red Sea, in a narrow valley above ...
and
Medina
Medina, officially al-Madinah al-Munawwarah (, ), also known as Taybah () and known in pre-Islamic times as Yathrib (), is the capital of Medina Province (Saudi Arabia), Medina Province in the Hejaz region of western Kingdom of Saudi Arabia, ...
),
Tunis
Tunis (, ') is the capital city, capital and largest city of Tunisia. The greater metropolitan area of Tunis, often referred to as "Grand Tunis", has about 2,700,000 inhabitants. , it is the third-largest city in the Maghreb region (after Casabl ...
, and Yemen. In the following century, the practice spread to
Asia Minor
Anatolia (), also known as Asia Minor, is a peninsula in West Asia that makes up the majority of the land area of Turkey. It is the westernmost protrusion of Asia and is geographically bounded by the Mediterranean Sea to the south, the Aegean ...
. According to King, there is no evidence of ''muwaqqit'' activity in more easterly parts of the Islamic world, including Iraq, Iran, India and
Central Asia
Central Asia is a region of Asia consisting of Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, and Uzbekistan. The countries as a group are also colloquially referred to as the "-stans" as all have names ending with the Persian language, Pers ...
. According to Brentjes, it is possible that the discipline of ''miqat'' spread eastwards as part of an exchange prompted by trade, pilgrimage, and travel for knowledge even though no written evidence has been found.
In the fifteenth century, the center of ''muwaqqit'' activities shifted to Egypt, especially the
al-Azhar Mosque in Cairo, but their scientific outputs were reduced. Among the well-known ''muwaqqits'',
Sibt al-Maridini (1423–1506) of Al-Azhar wrote treatises on timekeeping. He used simpler astronomical methods which became popular in Egypt and Syria. King speculates that he might have "unwittingly" contributed to the decline of astronomy in the Middle East because his works outcompeted more advanced texts. Other ''muwaqqits'' recorded in various mosques in fifteenth century Cairo include al-Kawm al-Rishi, 'Izz al-Din al-Wafa'i, al-Karadisi, and Abd al-Qadir al-Ajmawi. In addition, Egyptian astronomers Ibn al-Majdi and Ibn Abi al-Fath al-Sufi wrote extensively on religious timekeeping using more advanced astronomy than Sibt al-Maradani, but they were not formally attached to any mosque.
After the fifteenth century
''ʿIlm al-miqat'' and the activity of the ''muwaqqits'' (, singular ) continued into the time of the
Ottoman Empire
The Ottoman Empire (), also called the Turkish Empire, was an empire, imperial realm that controlled much of Southeast Europe, West Asia, and North Africa from the 14th to early 20th centuries; it also controlled parts of southeastern Centr ...
(which conquered the Mamluks in 1517), although now they produced less scientific works compared to the zenith in the 14th and 15th centuries. Their work was overseen by the ''
müneccimbaşı'' (chief imperial astrologer). The Turkish historian of science
Aydın Sayılı
Aydın Sayılı (; 2 May 1913 – 15 October 1993) was a prominent Turkish historian of science. Sayılı's portrait is depicted on the Obverse and reverse, reverse of the Turkish 5 Turkish lira, lira banknote issued in 2009. He was the first Ph ...
noted that many mosques in Istanbul have buildings or rooms called ' ("lodge of the ''muwaqqit''"). Ottoman sultans and other notables built and patronized them as acts of piety and philanthropy. Such constructions became more common over time, peaking during the late eighteenth and the nineteenth century. Ottoman astronomers produced prayer timetables in locations previously without them, and in the eighteenth century, the architect Salih Efendi wrote timekeeping tables which were popular among the ''muwaqqits'' of the imperial capital.
As the use of mechanical clocks became common during the eighteenth century, the ''muwaqqits'' included them as part of their standard tools and many became experts at making and repairing clocks. Ottoman ''muwaqqits'' also adapted existing tables to the Ottoman convention of defining 12:00 o'clock at sunset, requiring varying amounts of time shifts each day. Setting one's personal watch according to the clocks at ''muvakkithanes'' was a common practice after the spread of personal timepieces in late eighteenth century. Activities of the ''muwaqqits'' were also recorded in Syria (especially the Umayyad Mosque) and Egypt up to the nineteenth century.
Calculating prayer times today
From the nineteenth century, various religious agencies or scientific agencies approved by religious authorities began to produce annual prayer timetables. The times of prayer are included in calendars, annual
almanac
An almanac (also spelled almanack and almanach) is a regularly published listing of a set of current information about one or multiple subjects. It includes information like weather forecasting, weather forecasts, farmers' sowing, planting dates ...
s, and newspapers. During the sacred month of
Ramadan
Ramadan is the ninth month of the Islamic calendar. It is observed by Muslims worldwide as a month of fasting (''Fasting in Islam, sawm''), communal prayer (salah), reflection, and community. It is also the month in which the Quran is believed ...
, tables called ''imsakiyya'', containing times of prayer as well as that of the ''imsak'' (time to stop eating for the
fast) for the whole month, are printed and distributed. In the past few decades, some mosques have installed electronic clocks capable of calculating local prayer times and sounding reminders accordingly. Today a muazzin in a mosque can broadcast the call to prayer by consulting a table or a clock without requiring the specialised skill of a ''muwaqqit''.
See also
*
Dar al-Muwaqqit
References
Bibliography
*
*
*
*
*
*
*
*
*
{{Islamic astronomy
Mosques
Astronomy in the medieval Islamic world
Timekeeping
Salah