Pakistan identifies constitutionally as an Islamic Republic, with Islam as the state religion under Article 2 of the Constitution of Pakistan adopted in 1973. Approximately 96 to 97 percent of the population identifies as Muslim according to the 2017 census conducted by the Pakistan Bureau of Statistics. The Muslim population divides primarily between Sunni Islam at roughly 85 to 90 percent and Shia Islam at approximately 10 to 15 percent, though exact ratios remain contested due to sectarian sensitivities and incomplete census data on religious subdivision. The remaining 3 to 4 percent includes Hindus concentrated in Sindh province particularly Tharparkar district, Christians distributed across Punjab and Sindh, Sikhs primarily in Punjab, and smaller populations of Ahmadis, Zoroastrians, Bahais, and Buddhists. The Ahmadi community, numbering approximately 2 to 4 million, faces particular legal restrictions as a 1974 constitutional amendment and 1984 Ordinance XX classified them as non-Muslims despite their self-identification as Muslim, prohibiting them from calling their places of worship mosques or publicly practicing Islamic rituals.
The call to prayer broadcasts five times daily from mosques throughout every city, town, and village, with the fajr prayer before dawn beginning around 4:30 to 5:30 AM depending on season and latitude, dhuhr near midday around 12:00 to 1:30 PM, asr in afternoon around 3:30 to 5:00 PM, maghrib immediately after sunset, and isha approximately 90 minutes after sunset. Urban soundscapes reflect the overlapping calls from multiple mosques, sometimes creating a layered effect in densely populated areas like Karachi's old quarters or Lahore's walled city. The Faisal Mosque in Islamabad, completed in 1986 with capacity for 300,000 worshippers including courtyard space, serves as the national mosque and was designed by Turkish architect Vedat Dalokay. The Badshahi Mosque in Lahore, commissioned by Mughal Emperor Aurangzeb and completed in 1673, accommodates 95,000 worshippers and held the title of world's largest mosque for over 300 years until 1986. Friday congregational prayers draw maximum attendance with main prayers typically occurring between 1:00 and 2:00 PM, leading to closure of many businesses and significant traffic congestion in urban centers.
Daily routines in observant Muslim households begin with fajr prayer, followed by breakfast after sunrise, as eating before dawn prayer is uncommon except during Ramadan when the pre-dawn suhoor meal precedes the fast. Working hours in government offices officially run 8:00 AM to 4:00 PM with a break for dhuhr prayer, though private sector hours vary widely, particularly in Karachi's financial district where some offices operate 9:00 AM to 6:00 PM. The Islamic weekend was Friday only until 1997 when Saturday was added to create a two-day weekend, though this changed to Friday-Saturday in some provinces and Sunday remained part of the working week in others until a standardized Saturday-Sunday weekend was implemented for federal government offices in 2014, while many private businesses maintain Friday-Sunday schedules to accommodate both Islamic prayers and international business coordination. Provincial variations continue, with some businesses in Khyber Pakhtunkhwa maintaining Friday-only closures while operating shortened hours on other days.
Ramadan observance affects national rhythms comprehensively, with the lunar calendar month of fasting observed by the overwhelming majority of Muslims from dawn until sunset, typically lasting 29 or 30 days. Working hours officially shorten during Ramadan, with government offices operating approximately 9:00 AM to 2:00 PM, and many private businesses following similar reductions. Restaurants close during daylight hours except those serving non-Muslim communities or located in major hotels catering to foreigners, with public eating during daylight hours technically illegal under certain interpretations though enforcement varies by province and municipality. The pre-dawn suhoor market activity begins around 2:00 to 3:00 AM in major cities, with grocery stores and specific food vendors opening to serve those preparing the final meal before fasting. Iftar, the fast-breaking meal at sunset, becomes a communal affair with mosques providing free meals to hundreds or thousands, charitable organizations setting up roadside dastarkhwan (communal cloth spreads with food), and families gathering in homes. Traffic congestion reaches annual peaks in the 30 to 45 minutes before maghrib prayer as people rush home, with designated iftar times announced daily by the Central Ruet-e-Hilal Committee. The three-day Eid ul-Fitr festival marks Ramadan's end with dates determined by moon sighting, leading to occasional one-day discrepancies between provinces or between Pakistan and neighboring countries when provincial moon-sighting committees reach different conclusions.
The second major Islamic festival, Eid ul-Adha, commemorates Ibrahim's willingness to sacrifice his son and occurs approximately 70 days after Eid ul-Fitr in the Islamic lunar calendar month of Dhul Hijjah. Animal sacrifice constitutes the central religious obligation, with families purchasing and slaughtering goats, sheep, cows, or camels, distributing meat in traditional thirds to family, friends, and the poor, though actual distribution practices vary considerably. Major livestock markets operate in urban peripheries for weeks beforehand, with Karachi's Cattle Colony market reportedly trading over 400,000 animals in the days before Eid ul-Adha 2023. The slaughter occurs after Eid prayers typically between 7:00 and 9:00 AM on the first day of the three-day festival, with most urban families hiring professional butchers rather than performing slaughter themselves. City governments deploy thousands of sanitation workers and designate specific slaughter points, though disposal of waste remains challenging with blood and offal visible on streets particularly in older neighborhoods without adequate drainage. The cost of sacrificial animals fluctuates yearly, with 2023 prices ranging from approximately PKR 20,000 to 40,000 for goats, PKR 80,000 to 200,000 for cows, and substantially more for camels or premium breeds, representing significant financial outlay for many families who save throughout the year or pool resources with extended family members.
Milad un-Nabi, the Prophet Muhammad's birthday on 12th Rabiul Awwal in the Islamic calendar, generates public processions, building illuminations, and religious gatherings, though the practice remains controversial among certain Islamic scholarly traditions including Deobandi and Salafi schools that consider birthday celebrations un-Islamic innovations. The day is a national public holiday declared by the government, with major processions occurring in Karachi, Lahore, and Rawalpindi drawing tens of thousands of participants. Green flags and lights decorate streets and buildings particularly in Barelvi-majority neighborhoods, as the Barelvi school of thought strongly supports Milad celebrations. Ashura, the 10th of Muharram, commemorates the martyrdom of Imam Hussain at Karbala in 680 CE and holds particular significance for Shia Muslims who observe the entire first ten days of Muharram with mourning rituals including majalis (mourning assemblies) and matam (ritual chest-beating). Ashura processions on the 10th day follow traditional routes in major cities with participants dressed in black, some performing zanjeer zani (self-flagellation with chains) or qama zani (cutting foreheads with blades), though authorities have restricted certain practices in recent years. Security measures intensify during Muharram with thousands of police and paramilitary personnel deployed along procession routes, mobile phone services sometimes suspended in procession areas, and sectarian attacks having killed dozens in past years including 43 killed in Karachi bombings in December 2009 and over 60 killed in Quetta bombing in September 2013.