Burj Dubai, the tallest building in the world, will not open until January 4 next year, it was announced on Wednesday.
The opening will coincide with the four-year anniversary of Sheikh Mohammed bin Rashid Al Maktoum becoming the ruler of Dubai, official news agency WAM reported.
"We decided to inaugurate the world's highest tower during an anniversary that is dear to the hearts of everyone," Emaar chairman Mohammed Alabbar said in a statement.
"The Burj Dubai reflects the ambitious vision set by His Highness Sheikh Mohammed bin Rashid."
Sheikh Mohammed had been "the first supporter of the company and all of its projects since its inception", he added.
Developer Emaar had planned to open the the iconic tower on December 2, Alabbar told CNN last month.
December 2 is the National Day of the UAE.
In the CNN interview, Alabbar said that he was "shooting for UAE National Day", adding that "12,000 staff were working inside trying to get the building ready".
Work on the Burj Dubai started in January 2004 and the tower reached 100 levels in January 2007. A month later, it surpassed the Sears Tower in Chicago as the building with the most floors in the world.
Burj Dubai is now the world's tallest building and tallest man-made structure, having surpassed the height of the KVLY-TV mast in North Dakota, USA.
For all the latest construction news from the UAE and Gulf countries, follow us on Twitter and Linkedin, like us on Facebook and subscribe to our YouTube page, which is updated daily.
Subscribe to Arabian Business' newsletter to receive the latest breaking news and business stories in Dubai,the UAE and the GCC straight to your inbox.