The Pawukon is a Balinese calendar system which is used to define most (but not all) Hindu religious ceremonies. Some ceremonies however are defined according the Saka moon calendar, among others some temple festivals and Nyepi, Balinese New Year.

The Pawukon calendar has a repetitive cycle of 210 days. 'Years' are not counted in this calendar system. When one cycle ends, a new one automatically begins. These 210 days are divided into 30 weeks (30x7) that all have a specific name.

The Pawukon calendar is rather complex as it knows 10 different week systems, varying from a week that contain only one day to a week that contains 10 days. As with the complete calendar of 210 days itself, most of these week repeat as soon as the last weekday is reached.

The most important are the 3-day, 5-day and 7-day weeks of the Pawukon. Some ceremonies occur repeatingly when specific days from these weeks coincidence. For example when the second day of the three-day week ('kajeng') coincidences with the fifth day of the five-day week ('kliwon'), a day called 'Kajeng Kliwon' which takes place every 15 days (3x5).