Here is the Hindu festivals calendar 2013—

January 2013
Makar Sankranti – 14th January, 2013
Pongal – 15th January, 2013
Thai Pusam – January 27, 2013

February 2013
Vasant Panchami – Saraswati Puja – February 14, 2013

March 2013
Shivratri – March 10, 2013
Holika Dahan – March 26, 2013
Dhulandi Holi – March 27, 2013

April 2013
Ugadi (New Year in Karnataka and Andhra Pradesh) – April 11, 2013
Gudi Padva – April 11, 2013
Chaitra Navratri Begins - April 11, 2013
Cheti Chand – April 12, 2013
Chithirai 1 (Tamil New Year) – 14th April, 2013
Ram Navami – April 20, 2013
Hanuman Jayanti – April 25, 2013
Vishu (Kerala) – 14th April, 2013
New Year in Bengal and Assam – 15th April, 2013

May 2013
Akshaya Tritiya – May 13, 2013
Narasimha Jayanti – May 23, 2013

June 2013
Vat Savitri Vrat – June 8
Vat Purnima – June 23, 2013

July 2013
Puri Rath Yatra – July 10, 2013
Vyas Purnima, Guru Purnima – July 22, 2013

August 2013
Raksha Bandan – August 20, 2013
Sri Krishna Janmashtami – August 27 in south and western parts of India
Sri Krishna Janmashtami – August 28 in North India

September 2013
Haritalika Teej - September 8
Ganesh Chaturthi - September 9
Onam – September 16, 2013
Pitru Paksha Shradh begins September 20

October 2013
Pitru Paksha Shradh ends on October 4
Mahalaya - October 14
Navratri Begins – October 5
Durga Ashtami – October 12
Maha Navami – October 13
Vijaya Dashami – Dussehra – October 14
Karva Chouth – October 22

November 2013
Dhanteras - November 1
Deepavali – Diwali – November 3
Lakshmi Puja - November 3
Gujarati New Year - November 4
Bhai Dooj – November 5
Sabarimala Mandala Kalam begins – 16th November, 2013
Tulsi Puja and Vivah - November 13 to 17
Kal Bhairav Ashtami – November 26

December 2013
Gita Jayanti - December 13
Sri Dattatreya Jayanti - December 17