🇰🇷 Seoul

Seoul uses the Muslim World League method (method 3 in our calculator), an 18° Fajr and 17° Isha convention adopted by the Korea Muslim Federation and Seoul Central Mosque, the country's principal Islamic institutions. South Korea has no national Islamic authority that prescribes a fixed method, and MWL has emerged as the consensus default for a non-Muslim-majority country at Seoul's 37.6°N latitude because the 18-degree Fajr angle behaves predictably without producing the abnormally late Isha values that stricter conventions yield in summer. Seoul Central Mosque in Itaewon publishes its monthly schedule on this basis, and most prayer-time apps used by the Korean Muslim community mirror that timetable. Worshippers arriving from Saudi Arabia, Egypt or Pakistan and using their home country's preferred method will see Fajr and Isha drift by a few minutes from what the Itaewon mosque announces, while Dhuhr, Asr and Maghrib remain identical because they depend on the sun's transit and altitude rather than the twilight angle.

Prayer times in Seoul shift most around the summer and winter solstices because the city sits at 37.6°N, far enough from the equator to feel a clear day-length swing. In late June, Fajr is calculated for the brief pre-dawn window before sunrise around 05:10, while Isha falls after 20:20, giving roughly fifteen and a half hours of fasting in Ramadan when the month falls in summer. By late December the picture inverts: sunrise slips toward 07:45, Maghrib arrives before 17:20, and the entire arc of obligatory prayers compresses into less than ten daylight hours under the cold, dry continental winter. The equinoxes in March and September are the calmest periods, when daily prayer slots move only a minute or two either way. Seoul Central Mosque updates its printed schedule monthly to absorb this drift smoothly across the seasons.

Seoul hosts a small but visible Muslim community of roughly 100,000–200,000 across South Korea as a whole, with a significant share concentrated in the capital. The community is composed of long-term migrant workers and students from Indonesia, Pakistan, Bangladesh, Uzbekistan and the Arab world, alongside a smaller cohort of Korean converts. The Itaewon district in Yongsan-gu, around Seoul Central Mosque, is the demographic and cultural anchor — halal restaurants, butchers and travel agencies cluster on the slope leading up to the mosque, and the area is sometimes informally called Seoul's Muslim quarter. The Korea Muslim Federation, founded in 1967 and granted official recognition the same year, coordinates national religious affairs and operates a network of provincial mosques and prayer rooms. Halal certification has expanded steadily since the 2000s as Korea has become a destination for Muslim tourists, particularly from Malaysia and Indonesia.

Seoul Central Mosque in Itaewon, Yongsan-gu, hosts the largest Friday prayer in South Korea and is the country's principal Islamic institution. Inaugurated in 1976 as the first purpose-built mosque in the country, the white concrete building with twin minarets sits on a hill above the Itaewon shopping district and was funded by a coalition of Muslim-majority states including Saudi Arabia, Malaysia and Libya, on land donated by the Korean government. The prayer hall and surrounding plaza accommodate several thousand worshippers, with significant Eid overflow into the adjacent streets. Outside Seoul, the Bupyeong Mosque in Incheon and provincial mosques in Busan, Gwangju and Jeonju host smaller Friday congregations. Friday khutbas at Seoul Central are typically delivered in Arabic with Korean and English translation, reflecting the multinational composition of the worshippers, and most start between 13:00 and 13:30.

Prayer times differ between cities because they are calculated from the apparent position of the sun, which depends on each city's latitude, longitude and the date. Seoul sits at 37.6°N, 127.0°E in the Asia/Seoul time zone, so its sunrise, solar noon, sunset and twilight angles produce a daily timetable that no other city shares exactly. Two cities at very different latitudes — say London at 51°N and Riyadh at 24°N — experience twilight over very different durations, so Fajr, Maghrib and Isha can sit hours apart even on the same calendar date. Even cities at similar latitudes drift if they sit in different time zones or follow different calculation conventions for the Fajr and Isha twilight depression angles. Seoul, Tokyo and Beijing all sit near 36–40°N but their timetables differ by minutes because of time-zone offsets and method choices.