Following are the public holiday in India from 1st January 2009 to 31st December 2010

2009
26 Jan**: Republic Day. 
23 Feb: Mahashivratri.
9 Mar: Milad-Un-Nabi (Birth of the Prophet). 
7 Apr: Mahavir Jayanthi.
10 Apr: Good Friday.
13 Apr: Easter Monday.
9 May Buddha Purnima.
14 Aug: Janmashtami.
15 Aug**: Independence Day.
20-21 Sep Id ul Fitr (End of Ramadan).
28 Sep: Dussehra (Vijaya Dashami).
2 Oct**: Mahatma Gandhi's Birthday.
17 Oct: Deepavali or Diwali (Festival of Lights).
2 Nov: Guru Nanak's Birthday.
27-28 Nov: Idu'l Zuha/Bakrid (Feast of the Sacrifice).
18 Dec: Muharram (Islamic New Year).
25 Dec: Christmas Day.

2010
26 Jan**: Republic Day. 
Feb/Mar*: Mahashivratri.
26 Feb: Milad-Un-Nabi (Birth of the Prophet). 
2 Apr: Good Friday.
5 Apr: Easter Monday.
Apr*: Mahavir Jayanthi.
28 Apr: Buddha Purnima.
15 Aug**: Independence Day.
Aug*: Janmashtami.
10-11 Sep: Id ul Fitr (End of Ramadan).
2 Oct**: Mahatma Gandhi's Birthday.
Sep/Oct*: Dussehra (Vijaya Dashami).
2 Nov: Guru Nanak's Birthday.
5 Nov: Deepavali or Diwali (Festival of Lights).
16-17 Nov: Idu'l Zuha/Bakrid (Feast of the Sacrifice).
7 Dec: Muharram (Islamic New Year).
25 Dec: Christmas Day.

** Dates need to be confirmed.