zones have more than one mosque. For instance the north zone had Al-Noor as its main mosque and it also had other mosques. As of 2000, lay people volunteering as imams serve smaller ISGH mosques, while huffaz serve larger ISGH mosques. In 2000 Badr wrote that "The role of the clergy in the organizational structure of the ISGH has been an area of contention in the Muslim community." Some members believe the priority of the clergy is to keep the Muslim community together, while others believe that each director of an ISGH zone should focus on the issues at his particular mosque. Badr wrote that Houston huffaz often have views in opposition to those in the main leadership, and she added that they originate from various countries "and rarely agree on any issue—big or small—facing the Muslim community." The ISGH typically tries to build new mosques in community before other organizations do, so individual ethnic groups and factions do not build their own mosques. Ethnic relations As of 2000, according to Badr, about 10% of ISGH consisted of Arabs. According to Badr, from 1990 to 2000 many Arabs began to create their own mosques and Islamic schools separate from the ISGH due to disagreements over various issues including the language of the Friday sermons, the operations of Sunday schools and full-time schools, and the monetary distribution and collection. In 2000 Badr wrote that Muslims "remain fragmented along ethnic lines" and this is mainly due to increased immigration. There are women from south Asian backgrounds who do not believe in wearing the hijab, and the cultural differences result in different mosque attendance. As of 2000, on Friday evening sessions, 90% of the women attending the Main center are Arab, and 90% of the women attending the Friday night sessions at Al-Noor are Pakistani. The Northern zonal council has tried to remedy this by obtaining a group of members of various ethnic backgrounds. Religious doctrine When determining when Ramadan begins, the ISGH uses the time when a crescent moon is first seen in North America as the start date of Ramadan. This originates from the Islamic Society of North America (ISNA). Mosques Masjid Bilal This mosque is also known as the Adel Road Mosque. The Al-Noor mosque is a red brick building. Hoda Badr, author of "Al Noor Mosque: Strength Through Unity, wrote that "there is nothing to indicate that it is