The Muslim religious holiday of Ramadan is expected to be observed from August 1-29, 2011. Ramadan is considered to be the most important holiday in Islam and is marked by day-long fasting and an increase in call to prayers. As the holiday is based on sighting of the moon, the lunar cycle in various parts of the world will dictate the specific dates and times as to when observant Muslims will declare the holiday period. In countries with majority Muslim population (e.g., certain African and Central Asian countries, many Middle East countries, Indonesia, Malaysia, Turkey), government offices and private businesses may close early to observe fasting and prayer times. Therefore, clients are advised that during the month of August, and possibly through early September, processing work permit applications and other immigration-related matters may be delayed in certain majority-Muslim countries.