Ayambil Oli is a festival of 9 days celebrating and paying homage to the Navpad (The Navpad are also found in the Navkar Mantra). It falls between the 7th day of the lunar month to the full moon day of the Chaitra and Ashwina months.
Nava means nine in Sanskrit and Prakrit languages and Pada means post. Hence the word Navapada (That is generally spelled in English as Navpad) means nine supreme posts of the universe. These nine are Arihant, Siddha, Acharya, Upadhyaya, Sadhu, Samyag Darshan, Samyag Jnyan, Samyag Charitra and Samyag Tapa (Austerity)
Navapad is also called Siddha Chakra. This is a Yantra in circular shape in that Siddha is placed on the top. Arihant is placed in the center and Acharya at the right side of Arihant. Upadhyaya is placed in the lower side and Sadhu in the left side of Arihant. Samyag Darshan, Samyag Gyan, Samyag Charitra and Samyag Tapa are placed in four corners starting from upper right corner and then moving clock wise.
The Navpad and Siddha Chakra are worshipped during the festival.