Definition: Compose a new way to ask the same question. The new question must be asking the exact same thing as the original question does. Without any other information, you should be able to tell that the original question and the new question are the same. Preserve bracketed phrases in your new question. You can change the rest of the question provided the above requirements are satisfied. The new question must have a natural, fluent formulation, as if it were composed by a native English speaker. You will be given three pieces of information to help you create better questions. Those are: "Answer": the answer to the question, e.g., "Honolulu". "Answer Type": the type of the answer, e.g., "Location". "Auxiliary Information" is a detailed description of some concepts mentioned in the question, if any.
Input: original question: Which day of week is in the calendar system of [Ramadan]?
answer: monday, thursday, sunday...
answer type: Day Of Week.
auxiliary information: Ramadan or Ramadhan is the ninth month of the Islamic calendar, and the month in which the Quran was revealed. Fasting during the month of Ramadan is one of the Five Pillars of Islam. The month is spent by Muslims fasting during the daylight hours from dawn to sunset. According to Islam, the Quran was sent down to the lowest heaven during this month, thus being prepared for gradual revelation by Jibreel to the Islamic prophet Muhammad. Furthermore, Muhammad told his followers that the gates of Heaven would be open for the entire month and the gates of Hell would be closed. The first day of the next month, Shawwal, is spent in celebration and is observed as the "Festival of Breaking Fast" or Eid al-Fitr .

Which days of the week are on the [Ramadan] calendar?