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In the
history of Islam The history of Islam concerns the political, social, economic, military, and cultural developments of the Islamic civilization. Most historians believe that Islam originated in Mecca and Medina at the start of the 7th century CE. Muslims ...
, a ''muwaqqit'' ( ar, مُوَقَّت, more rarely ''mīqātī'') was an astronomer tasked with the
timekeeping Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, into the future. It is a component quantity of various measurements used to sequence events, t ...
and the regulation of
prayer times Fixed prayer times, praying at dedicated times during the day, are common practice in major world religions such as Judaism, Christianity, and Islam. Judaism Jewish law requires Jews to pray thrice a day; the morning prayer is known as Shachari ...
in an Islamic institution like a
mosque A mosque (; from ar, مَسْجِد, masjid, ; literally "place of ritual prostration"), also called masjid, is a Place of worship, place of prayer for Muslims. Mosques are usually covered buildings, but can be any place where prayers (sujud) ...
or a
madrasa Madrasa (, also , ; Arabic: مدرسة , pl. , ) is the Arabic word for any type of educational institution, secular or religious (of any religion), whether for elementary instruction or higher learning. The word is variously transliterated '' ...
. Unlike the
muezzin The muezzin ( ar, مُؤَذِّن) 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. The muezzin plays an important ro ...
(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 earliest forms of telecommunication, communicating to people across great distances. All religions ...
) 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 Mosque of Amr ibn al-As ( ar, جامع عمرو بن العاص), or Taj al-Jawame' ( ar, تاج الجوامِع, lit=Crown of Mosques), or Masjid Ahl ar-Rayah ( ar, مسجد اهل الرّاية, lit=Mosque of the Banner Bearers), or Ja ...
in the Mamluk Sultanate of Cairo and then spread to various parts of the
Muslim world The terms Muslim world and Islamic 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 and laws of Islam or to societies in which Islam is practiced. In ...
. 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 light produced by sunlight scattering in the upper atmosphere, when the Sun is below the horizon, which illuminates the lower atmosphere and the Earth's surface. The word twilight can also refer to the periods of time when this ...
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 history, ancient times to the present. It encompasses all three major branches of science: natural science, natural, social science, social, and formal science, formal. Sc ...
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 ʿAlī ibn Ibrāhīm al-Ansari known as Ibn al-Shatir or Ibn ash-Shatir ( ar, ابن الشاطر; 1304–1375) was an Arab astronomer, mathematician and engineer. He worked as ''muwaqqit'' (موقت, religious t ...
(1304–1375) and Shams al-Din al-Khalili (1320–1380) formed a team of muwaqqits in the
Umayyad Mosque The Umayyad Mosque ( ar, الجامع الأموي, al-Jāmiʿ al-Umawī), also known as the Great Mosque of Damascus ( ar, الجامع الدمشق, al-Jāmiʿ al-Damishq), located in the old city of Damascus, the capital of Syria, is one of t ...
of Damascus. Syria and Egypt were the major centres of muwaqqit activity in these centuries, while the office spread to
Palestine __NOTOC__ Palestine may refer to: * State of Palestine, a state in Western Asia * Palestine (region), a geographic region in Western Asia * Palestinian territories, territories occupied by Israel since 1967, namely the West Bank (including East J ...
, Hejaz,
Tunis ''Tounsi'' french: Tunisois , population_note = , population_urban = , population_metro = 2658816 , population_density_km2 = , timezone1 = CET , utc_offset1 ...
, 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 (, plural , romanized: or Old Arabic ͡sˤaˈloːh, ( or Old Arabic ͡sˤaˈloːtʰin construct state) ), also known as ( fa, نماز) and also spelled , are prayers performed by Muslims. Facing the , the direction of the Kaaba wi ...
, the daily ritual prayer, at prescribed times based on the
hadith Ḥadīth ( or ; ar, حديث, , , , , , , literally "talk" or "discourse") or Athar ( ar, أثر, , literally "remnant"/"effect") refers to what the majority of Muslims believe to be a record of the words, actions, and the silent approval ...
or the tradition of
Muhammad Muhammad ( ar, مُحَمَّد;  570 – 8 June 632 CE) was an Arab religious, social, and political leader and the founder of Islam. According to Islamic doctrine, he was a prophet divinely inspired to preach and confirm the monot ...
(–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 The Maghrib Prayer ( ar, صلاة المغرب ', "sunset prayer") is one of the five mandatory salah (Islamic prayer). As an Islamic day starts at sunset, the Maghrib prayer is technically the first prayer of the day. If counted from midn ...
starts after
sunset Sunset, also known as sundown, is the daily disappearance of the Sun below the horizon due to Earth's rotation. As viewed from everywhere on Earth (except the North and South poles), the equinox Sun sets due west at the moment of both the spr ...
and ends when the red
twilight Twilight is light produced by sunlight scattering in the upper atmosphere, when the Sun is below the horizon, which illuminates the lower atmosphere and the Earth's surface. The word twilight can also refer to the periods of time when this ...
has disappeared. Because the start and end times for prayers are related to the solar
diurnal motion Diurnal motion (, ) is an astronomical term referring to the apparent motion of celestial objects (e.g. the Sun and stars) around Earth, or more precisely around the two celestial poles, over the course of one day. It is caused by Earth's r ...
, 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 (, ; Standard Arabic: , Quranic Arabic: , , 'the recitation'), also romanized Qur'an or Koran, is the central religious text of Islam, believed by Muslims to be a revelation from God. It is organized in 114 chapters (pl.: , sing.: ...
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 speaker driver) is an electroacoustic transducer that converts an electrical audio signal into a corresponding sound. A ''speaker system'', also often simply referred to as a "speaker" or ...
, this was usually done from the top of a
minaret A minaret (; ar, منارة, translit=manāra, or ar, مِئْذَنة, translit=miʾḏana, links=no; tr, minare; fa, گل‌دسته, translit=goldaste) is a type of tower typically built into or adjacent to mosques. Minarets are generally ...
. 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 horological device that tells the time of day (referred to as civil time in modern usage) when direct sunlight shines by the apparent position of the Sun in the sky. In the narrowest sense of the word, it consists of a fl ...
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 ( ar, ٱلتَّقْوِيم ٱلْهِجْرِيّ, translit=al-taqwīm al-hijrī), also known in English as the Muslim calendar and Islamic calendar, is a lunar calendar consisting of 12 lunar months in a year of 354 ...
and the determination of the
qibla The qibla ( ar, قِبْلَة, links=no, lit=direction, translit=qiblah) is the direction towards the Kaaba in the Sacred Mosque in Mecca, which is used by Muslims in various religious contexts, particularly the direction of prayer for the s ...
(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, 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'' (; ar, فقه ) is Islamic jurisprudence. Muhammad-> Companions-> Followers-> Fiqh. The commands and prohibitions chosen by God were revealed through the agency of the Prophet in both the Quran and the Sunnah (words, deeds, and ...
and philosophy. 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 Secondary may refer to: Science and nature * Secondary emission, of particles ** Secondary electrons, electrons generated as ionization products * The secondary winding, or the electrical or electronic circuit connected to the secondary winding i ...
biographies of the muwaqqits during the Mamluk era, including the works of
al-Sakhawi Shams al-Dīn Muḥammad ibn ‘Abd al-Raḥmān al-Sakhāwī ( ar, شمس الدين محمد بن عبدالرحمن السخاوي, 1428/831 AH – 1497/902 AH) was a reputable Shafi‘i Muslim hadith scholar and historian who was born in ...
, a prominent 15th-century author and hadith scholar. 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 dirhm ( ar, درهم) is a silver unit of currency historically and currently used by several Arab and Arab influenced states. The term has also been used as a related unit of mass. Unit of mass The dirham was a un ...
s (silver coin) per month, compared to 900 for an imam, 500 for a
khatib In Islam, a khatib, khateeb or hatib ( ar, خطيب ''khaṭīb'') is a person who delivers the sermon (''khuṭbah'') (literally "narration"), during the Friday prayer and Eid prayers. The ''khateeb'' is usually the prayer leader (''imam''), ...
, 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 ( ar, الجامع الأموي, al-Jāmiʿ al-Umawī), also known as the Great Mosque of Damascus ( ar, الجامع الدمشق, al-Jāmiʿ al-Damishq), located in the old city of Damascus, the capital of Syria, is one of t ...
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 ʿAlī ibn Ibrāhīm al-Ansari known as Ibn al-Shatir or Ibn ash-Shatir ( ar, ابن الشاطر; 1304–1375) was an Arab astronomer, mathematician and engineer. He worked as ''muwaqqit'' (موقت, religious t ...
, 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 ( ar, سلطنة المماليك, translit=Salṭanat al-Mamālīk), also known as Mamluk Egypt or the Mamluk Empire, was a state that ruled Egypt, the Levant and the Hejaz (western Arabia) from the mid-13th to early 16t ...
. 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 Mosque of Amr ibn al-As ( ar, جامع عمرو بن العاص), or Taj al-Jawame' ( ar, تاج الجوامِع, lit=Crown of Mosques), or Masjid Ahl ar-Rayah ( ar, مسجد اهل الرّاية, lit=Mosque of the Banner Bearers), or Ja ...
in
Fustat Fusṭāṭ ( ar, الفُسطاط ''al-Fusṭāṭ''), also Al-Fusṭāṭ and Fosṭāṭ, was the first capital of Egypt under Muslim rule, and the historical centre of modern Cairo. It was built adjacent to what is now known as Old Cairo by ...
, 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 translit. ; an, al-Andalus; ast, al-Ándalus; eu, al-Andalus; ber, ⴰⵏⴷⴰⵍⵓⵙ, label= Berber, translit=Andalus; ca, al-Àndalus; gl, al-Andalus; oc, Al Andalús; pt, al-Ândalus; es, al-Ándalus () was the Mus ...
and the
Maghreb The Maghreb (; ar, الْمَغْرِب, al-Maghrib, lit=the west), also known as the Arab Maghreb ( ar, المغرب العربي) and Northwest Africa, is the western part of North Africa and the Arab world. The region includes Algeria, ...
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 (,, DIN: ; grc, Ἐλιβύργη, Elibýrgē; la, Illiberis or . ) is the capital city of the province of Granada, in the autonomous community of Andalusia, Spain. Granada is located at the foot of the Sierra Nevada mountains, at the c ...
. 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 ( ar, جامعة القرويين; ber, ⵜⴰⵙⴷⴰⵡⵉⵜ ⵏ ⵍⵇⴰⵕⴰⵡⵉⵢⵉⵏ; french: Université Al Quaraouiyine), also written Al-Karaouine or Al Quaraouiyine, is a university located in ...
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 and
Palestine __NOTOC__ Palestine may refer to: * State of Palestine, a state in Western Asia * Palestine (region), a geographic region in Western Asia * Palestinian territories, territories occupied by Israel since 1967, namely the West Bank (including East J ...
. The Ibrahimi Mosque in
Hebron Hebron ( ar, الخليل or ; he, חֶבְרוֹן ) is a State of Palestine, Palestinian. city in the southern West Bank, south of Jerusalem. Nestled in the Judaean Mountains, it lies Above mean sea level, above sea level. The second-lar ...
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 An astrolabe ( grc, ἀστρολάβος ; ar, ٱلأَسْطُرلاب ; persian, ستاره‌یاب ) is an ancient astronomical instrument that was a handheld model of the universe. Its various functions also make it an elaborate inclin ...
(), served in Aleppo 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 ( grc, ἀστρολάβος ; ar, ٱلأَسْطُرلاب ; persian, ستاره‌یاب ) is an ancient astronomical instrument that was a handheld model of the universe. Its various functions also make it an elaborate incli ...
s and
sundial A sundial is a horological device that tells the time of day (referred to as civil time in modern usage) when direct sunlight shines by the apparent position of the Sun in the sky. In the narrowest sense of the word, it consists of a fl ...
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 (; pl, Mikołaj Kopernik; gml, Niklas Koppernigk, german: Nikolaus Kopernikus; 19 February 1473 – 24 May 1543) was a Renaissance polymath, active as a mathematician, astronomer, and Catholic canon, who formula ...
(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 qāḍī ( ar, قاضي, Qāḍī; otherwise transliterated as qazi, cadi, kadi, or kazi) is the magistrate or judge of a ''sharīʿa'' court, who also exercises extrajudicial functions such as mediation, guardianship over orphans and minor ...
(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 was a leading Islamic scholar, a faqīh, a muḥaddith and a historian from the celebrated al-Subkī family ...
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 (including
Mecca Mecca (; officially Makkah al-Mukarramah, commonly shortened to Makkah ()) is a city and administrative center of the Mecca Province of Saudi Arabia, and the holiest city in Islam. It is inland from Jeddah on the Red Sea, in a narrow val ...
and
Medina Medina,, ', "the radiant city"; or , ', (), "the city" officially Al Madinah Al Munawwarah (, , Turkish: Medine-i Münevvere) and also commonly simplified as Madīnah or Madinah (, ), is the second-holiest city in Islam, and the capital of the ...
),
Tunis ''Tounsi'' french: Tunisois , population_note = , population_urban = , population_metro = 2658816 , population_density_km2 = , timezone1 = CET , utc_offset1 ...
, and Yemen. In the following century, the practice spread to
Asia Minor Anatolia, tr, Anadolu Yarımadası), and the Anatolian plateau, also known as Asia Minor, is a large peninsula in Western Asia and the westernmost protrusion of the Asian continent. It constitutes the major part of modern-day Turkey. The ...
. 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, also known as Middle Asia, is a region of Asia that stretches from the Caspian Sea in the west to western China and Mongolia in the east, and from Afghanistan and Iran in the south to Russia in the north. It includes the former ...
. 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 Al-Azhar Mosque ( ar, الجامع الأزهر, al-Jāmiʿ al-ʾAzhar, lit=The Resplendent Congregational Mosque, arz, جامع الأزهر, Gāmiʿ el-ʾazhar), known in Egypt simply as al-Azhar, is a mosque in Cairo, Egypt in the histori ...
in Cairo, but their scientific outputs were reduced. Among the well-known ''muwaqqits'',
Sibt al-Maridini Sibt al-Maridini, full name Muḥammad ibn Muḥammad ibn Aḥmad Abū ʿAbd Allāh Badr hamsal‐Dīnal‐Miṣrī al‐Dimashqī (1423 – 1506 AD), was an astronomer and mathematician. () His father came from Damascus. The word "Sibt al-Ma ...
(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'' ( tr, muvakkitler, singular ) continued into the time of the
Ottoman Empire The Ottoman Empire, * ; is an archaic version. The definite article forms and were synonymous * and el, Оθωμανική Αυτοκρατορία, Othōmanikē Avtokratoria, label=none * info page on book at Martin Luther University) ...
(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 Müneccimbaşı (sometimes also spelled as ''Müneccimbashi,'' ''Müneccimbasi,'' ''Munejjimbashi,'' or ''Munejjim-bashi'') was the title given to the chief court astrologer in the Ottoman Empire. The title was held in succession from the 15th ce ...
'' (chief imperial astrologer). The Turkish historian of science Aydın Sayılı 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 an annual publication listing a set of current information about one or multiple subjects. It includes information like weather forecasts, farmers' planting dates, tide tables, and othe ...
s, and newspapers. During the sacred month of Ramadan, tables called ''imsakiyya'', containing times of prayer as well as that of the ''imsak'' (time to stop eating for the
fast Fast or FAST may refer to: * Fast (noun), high speed or velocity * Fast (noun, verb), to practice fasting, abstaining from food and/or water for a certain period of time Acronyms and coded Computing and software * ''Faceted Application of Subje ...
) 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 A Dar al-Muwaqqit (), or muvakkithane in Turkish, is a room or structure accompanying a mosque which was used by the '' muwaqqit'' or timekeeper, an officer charged with maintaining the correct times of prayer and communicating them to the muezzi ...


References


Bibliography

* * * * * * * * * {{Islamic astronomy Mosques Astronomy in the medieval Islamic world Timekeeping Salah