Muslim Presence in Ansan-si: Ansan-si, a city in Gyeonggi Province, South Korea, is home to a growing Muslim community. While the historical roots of Islam in the city are not extensively documented, the presence of several mosques and Islamic centers indicates a settled community that has established itself over time. The city's multicultural environment, partly due to its industrial zones, has attracted Muslim workers and families, contributing to a stable and active religious life.

Community Implantation through Mosques: The Muslim community in Ansan-si is well-served by local prayer places, notably the Ansan Mosque and the BILAL ISLAMIC CENTER, both located in the Wongok-dong area of Danwon-gu. These facilities provide daily prayers and community services. Beyond Ansan, the broader region includes the Seoul Central Mosque in Yongsan District, a prominent landmark that serves as a central hub for Muslims in the capital area. Other mapped prayer places in nearby cities such as Incheon, Suwon, and Hwaseong further illustrate the widespread implantation of the Muslim community across Gyeonggi Province.

Prayer-Time Orientation: For Muslims in Ansan-si, the daily prayer rhythm follows the five obligatory prayers: Fajr, Dhuhr, Asr, Maghrib, and Isha. The times for these prayers vary throughout the year due to changes in sunrise and sunset, influenced by the city's latitude and the seasons. Ansan-si operates on Asia/Seoul timezone. The Qibla direction, essential for prayer, is oriented towards Mecca, which lies approximately 8,000 kilometers away. The calculation method used for determining prayer times is standardized to ensure accuracy for the local community.