The five important Srividya Navratris of Sahasradalayatakshee Lalitha Shaktipeetham are

• Magha Rajashyamala Navaratri
• Chaitra Lalitha Navratri 
• Ashada Mahavarahi Navratri 
• Bhadrapada Vighneshwar Navratri
• Aashweena Durga\Chandi Navratri

The most important Shaiva festivities of Ardreshwarar Shivan Koyil are 

• Magha Maasa Mahashivratri
• Shravana Maasa pujas
• Karthika Maasam & Deepam
• Ardra Darshanam
• Maasika Pradosham
• Somavati Amavasyas

Other Important events in our Calander

• Bhadrapada Vighneshwar Navratri & 
• Thaipusam Celebrations at Shanmugha Koyil 
• Chaitra Maasam pujas & homas during Shuklapaksha at Balashakti Koyil 
• Adishankaracharya Jayanti on Vaishakha Shukla Panchami 
• Kalabhairava Jayanthi During Karthika Krishna Ashtami at Kaalabhairavar Koyil 
• Dattatreya Jayanti on Marghashira Purnima & Wednesday Dattatreya Pujas at Sadgurushridatta Peetham 
• Guruvayurrappan Ekadashi on Marghashira Shukla Ekadashi at Sammohana Krishna Koyil 
• Srisharabeshwara Jayanthi on Vaishakha Shukla Chaturdashi at Srisharabeshwara Koyil 
• Naagapanchami pujas at Ashleshaa - The Navanagar Koyil

Dasamahavidya Jayantis & Homams

• Mahaakaali - ashweeja krishnapaksha astami.
• Tara devi - chaitra shuklanavami.
• Chinnamasta - vaishaka shukla chaturdashi
• Bagalamukhi - vaishaka shukla astami
• Matangi - vaishaka shukla thruthiya.
• Dhumavathi - jyeshta shukla astami.
• Bhuvaneshwari - bhadrapada shukla astami.
• Shodashi - magha pournami
• Kamala - margasira amavasya.
• Tripurabhairavi - margashira pournami

Monthly Events

• Purnima & Amavasya Navaavarna pujaas g Homam at Sahasradalayatakshee Lalitha Shaktipeetham 
• Maasika Ardra Nakshatra vishesha pujas at Ardreshwarar Shivan Koyil 
• Maasika Sankashtahara Ganapati Pujas g Homam at Vighneshwar Koyil
• Maasika Shukla Srishti Shanmugha Panchamruta Abhisheka & Shodashopacharam at Shanmugha Koyil
• Maasika Kaalabhairavar Ashtami pujas, homas n Shodashopachararam at Kaalabhairavar Koyil
• Maasika Amaavasyas Prathyangira & Bhutanatha Homams

Weekly Rituals

Sundays

• Srisharabeshwara Pujas
• Shrisuryadevar Pujas

Mondays

• Somavaara Panchamruta Abhisheka n & Shodashopachararam & Utsavam

Tuesday 

• Shanmugha Pujas
• Veerabhadrar Pujas
• Prathyangira Pujas

Wednesdays

• Dattatreya pujas at Sadgurushridatta Peetham 
• Vighneshwar Pujas at Vighneshwar Koyil 

Thursdays

• Dashinaamurthii Pujas at Medhaadakshinaamurthii Koyil

Fridays

• Balatripurasundari Manasa Puja & Shodashopacharam at Balashakti Koyil
• Nakuli Pujas 

Saturdays

• Kaalabhairavar Pujas

Dasamahavidya Pujas

• Saturday Saturn (Shani) Maa Kali
• Thursday Jupiter (Guru/Brihaspati) Maa Tara
• Wednesday Mercury (Budha) Maa Tripura Sundari/Shodashi
• Monday Moon (Chandra) Maa Bhuvaneshwari
• Tuesday Mars (Mangala/Kuja) Maa Bagalamukhi
• (General day for Devi) Lagna (Ascendant) Maa Tripura Bhairavi
• (No specific day, controls Ketu) Ketu Maa Dhumavati
• (No specific day, controls Rahu) Rahu Maa Chhinnamasta
• Sunday Sun (Surya) Maa Matangi
• Friday Venus (Shukra) Maa Kamala

Nityapujas

• Nitya Ashtottaram to main deities.
• Srirudrabhishekam to Ardreshwarar Shivan 
• Lalitha Sahasranama Kumkumarchanam,
• Sahasradalayatakshee Ashtottaram 
• Khadgamala Mantram
• Shodashopacharam 
• Lalitha Trishati Kumkumarchanam 
• Nitya kalyanas & dhyanas of Kameshvati & Kameshwarar at Kameshvati & Kameshwarar Koyil