Eid al-Adha "Festival of Sacrifice" or "Greater Eid" is a Muslim Holiday celebrated by Muslims, worldwide to commemorate the willingness of Ibrahim to sacrifice his son Ismael as an act of obedience to God. Eid al-Adha annually falls on the 10th day of the month of Dhul Hijja of the Islamic calendar. This day come approximately 70 days after the end of the month of Ramadan.
Where :
All Over Indonesia
When :
Men, women, and children are expected to dress in their finest clothing to perform Eid prayer, In a large congregation in open area (not in a mosque). Muslims who can afford to do so sacrifice their best domestic animals (usually sheep, but also camels,and goats) as a symbol of Ibrahim's sacrifice. The sacrificed animals known as "al-qurbani" have to meet certain age and quality standards or else the animal is considered an unacceptable sacrifice. Generally, these must be at least a year old.
More Details :
Distributing meat among people is considered an essential part of the festival during this period.
Images :
References :
Wikipedia : Eid_al_Adha
See the dates on which Eid_al_Adha is celebrated :

Eid al-Adha

Year Month Day Day of Week
2005 January 21 Friday
2006 January 10 Tuesday
2006 December 31 Sunday
2007 December 20 Thursday
2008 December 09 Tuesday
2009 November 27 Friday
2010 November 17 Wednesday
2011 November 06 Sunday
2012 October 26 Friday
2013 October 15 Tuesday
2014 October 05 Sunday
2015 September 24 Thursday
Related Holidays :
New Year's Day Chinese New Year Prophet Muhammad's Birthday Day of Silence
Good Friday Waisak Day Independence Day Eid al-Fitr
Eid al-Adha Muharram Christmas Day  
Indonesia Holidays List
Holiday List 2008 Holiday List 2009 Holiday List 2010