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#1
January 31st 18, 02:16 PM
posted to uk.sci.astronomy
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Of moon and tides
A quirk of celestial mechanics.
As the last blood-red , blue-moon, super-moon was 31 March 1866 we'll have to wait 55458 days for the next coincidence of the tides in the channel , presumably. I wonder what conjuction of tidal harmonics gives a 55,458 day repeat. The high tides in ports of a large part of the English channel today are all the same time. I originally thought there was a problem with big-data http://www.ntslf.org/storm-surges/la...ast?port=Dover http://www.ntslf.org/storm-surges/la...?port=Newhaven http://www.ntslf.org/storm-surges/la...ort=Portsmouth And from the UK Hydrographic office, high tide times today Portsmouth,10:53, 23:24 Newhaven, 10:43 , 23:17 Dover, 10:44, 23:09 
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