CYPRUS STOCK EXCHANGE (CSE)
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ATHENS STOCKS EXCHANGE (ASE)
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http://www.ase.gr/content/en/Ann.asp?AnnID=55002
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LONDON STOCK EXCHANGE (LSE)
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http://www.londonstockexchange.com/about-the-exchange/company-overview/business-days/business-days.htm
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NEW YORK STOCK EXCHANGE (NYSE)
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http://www.investmentu.com/nyse-holiday-schedule.html