section_path: Cycles of days/Seven-day week
section_name: Seven-day week
paragraph_text: Seven-day week
  
  The seven-day-long week cycle (dina pitu, "seven days") is derived from the Islamic calendar, adopted following the spread of Islam throughout the Indonesian archipelago. The names of the days of the week in Javanese are derived from their Arabic counterparts, namely:
  
  These two week systems occur concurrently; thus, a certain Friday may fall on a Kliwon day, and is consequently called Jumat Kliwon. This combination forms the Wetonan cycle.