Dear Subita :)
HAPPY NEW YEAR :D
List of Holidays for Central Govt. Offices in Delhi / New Delhi are :
Muharram - 19th Jan
Republic Day - 26th Jan
Maha Shivratri - 6th Mar
Good Friday - 21st Mar
Holi - 22nd Mar
Ram Navami - 14th Apr
Mahavir Jayanti - 18th Apr
Buddha Purnima - 20th May
Independence Day - 15th Aug
Mahatma Gandhi's bday & Idul Fitr - 2nd Oct
Dussehra - 9th Oct
Diwali - 28th Oct
Guru Nanak's Bday - 13th Nov
Idul Zuha(Bakrid) - 9th Dec
Christmas Day - 25th Dec
I hope this would suffice.
Bhavna :)