Regular Diwans - These are the daily (weekdays and weekends) congregates where the community (Sangat) comes together to listen and understand Sri Guru Granth Sahib. In Sikhism the concept of Sangat is very important.

Special Diwans - These take place on the days that are special in the Sikh calender. For example the Khalsa Day, Vaisakhi, when ASA organises special activities to celebrate the relevant occassion.