On 22 March 1911, a royal proclamation announced that the Durbar would be held in December to commemorate the coronation in Britain a few months earlier of George V and Mary of Teck and allow their proclamation as Emperor and Empress of India. Practically every ruling prince and nobleman in India, plus thousands of landed gentry and other persons of note, attended to pay obeisance to their sovereigns. The official ceremonies lasted from 7 to 16 December, with the Durbar itself occurring on Tuesday, 12 December. The royal couple arrived at Coronation Park in their Coronation robes, the King-Emperor wearing the Imperial Crown of India with eight arches, containing 6170 exquisitely cut diamonds, and covered with sapphires, emeralds and rubies, with a velvet and miniver cap all weighing 34 ounces. They received homage from the native princes – including one woman, the Begum of Bhopal – at the ceremonial tent. Afterwards, the royal couple ascended to the domed royal pavilion, where the King-Emperor announced the move of India's capital from Calcutta to Delhi. The annulment of the Partition of Bengal was also announced during the ceremony.