i thought it was every quarter? I might be wrong but if you own the stock on Sept 7 you will get your dividend.
2015 Final Dividend
Preliminary Results Announcement and Dividend Determination
25 August 2015
Last day to trade cum dividend on JSE Limited and currency conversion into RAND
4 September 2015
Ex-Dividend Date (Johannesburg Stock Exchange)
7 September 2015
Ex-Dividend Date (Australian & New York3 Stock Exchanges)
9 September 2015
Ex-Dividend Date (London Stock Exchange)
10 September 2015
Record Date (including currency conversion and currency election dates for Australian & London stock exchanges)
11 September 2015
29 September 2015
Please note that BHP Billiton Plc shareholders registered on the South African section of the register will not be able to dematerialise or rematerialise their shareholdings between the dates of 7 and 11 September 2015 (inclusive), nor will transfers between the UK register and the South African register be permitted, between the dates of 4 and 11 September 2015 (inclusive).