Hajj will be celebrated on 01st August 1:28:00 AM Sri Lanka News – Newsfirst Colombo (News 1st); The Colombo Grand Mosque announced Eid al-Adha (the Hajj festival) will be celebrated on August 1st as the crescent was not sighted on Tuesday (21). Hajj will be celebrated on 01st August Share this Share on FacebookTweet on TwitterPlus on Google+