Tithi in Hindu Calendar on December 18, 2011 – Krishna Paksha Ashtami Tithi or the eighth day during the waning phase of moon in Hindu calendar and Panchang in all places. It is Ashtami Tithi till 2:42 PM on December 18, 2011. After 2:42 PM it is Krishna Paksha Navami or ninth day during the waning phase of moon. All time based on India Standard Time.
Nakshatra – Uttara Phalguni or Uthiram Nakshatra till 5:57 PM on December 18. Then onwards it is Hasta or Atham Nakshatram.
Rashi or Moon Sign – Simha Rasi till 1:15 AM. Afterwards it is Kanya Rasi.
Festivals, Vrat and Auspicious days –
Margashirsh Krishna Paksha Ashtami Tithi or the eighth day during the dark phase of moon Margashirsh month in calendars followed in Karnataka, Andhra Pradesh, Maharashtra, Gujarat and
Paush Krishna Paksha Ashtami Tithi or the eighth day during the waning phase of moon in Paush month in calendars followed in Delhi, Rajasthan, Uttar Pradesh, Bihar, Jharkhand, Madhya Pradesh, Haryana, Punjab, Himachal Pradesh, Uttarakhand, Chhattisgarh, Orissa and Jammu and Kashmir.
2nd day of Margazhi Masam in Tamil Calendar followed in Tamil Nadu.
2nd day of Dhanu Masam in Malayalam Calendar in Kerala.
2nd day of Paush month in Bengali Calendar.