Here comes the time of the year for harvesting dividends. Yay!
I wonder if that is why people 'sell in May and go away' other than the summer holiday...
Just a refresher on what is ex-dividend date:
http://www.investopedia.com/ask/answers/06/exdividenddate.asp
Where can you find the ex-dividend date on SG stocks?
Here http://www.sgx.com/wps/portal/sgxweb/home/company_disclosure/stockfacts
Find the stock and click on the Dividend tab......