[LEAPSECS] Brazilian stock exchange already leaped?
seaman at noao.edu
Tue Jun 30 10:17:27 EDT 2015
Anybody know anything about this? The Economist says:
"The Brazilian stock exchange adjusted its clocks on June 28th, a Sunday, when it was closed.”
(http://www.economist.com/blogs/freeexchange/2015/06/leap-seconds-and-financial-markets <http://www.economist.com/blogs/freeexchange/2015/06/leap-seconds-and-financial-markets>) This is somewhat perplexing since the leap second will hit at 9 pm BRT. Surely the exchange would have been closed anyway?
Setting aside skepticism over this description, what timekeeping requirements exist between different stock exchanges? To what extent is trading interlinked? Or do they each operate strictly separately? There might even be stringent laws about not permitting trades that span multiple markets?
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