I have not yet found a site where i can find times in advance of todays date...it would be better to buy a paper tidetable or there is a program called tide plotter from this site http://www.tideplot.force9.co.uk/
I have used this before and shows you all the tide details you need and will give you a graph that moves with the time... you can buy it from most good yacht chandlers for about £10 sqiud
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