Astronomy:Establishment of a port

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Establishment of a port is the technical expression for the time that elapses between the moon's transit across the meridian at new or full moon at a given place and the time of high water at that place. The interval (constant at any one place) may vary from 6 minutes (Harwich) to 11 hours 45 minutes (North Foreland). At London Bridge it is 1 hour 58 minutes.[1]

External links

References

  1.  One or more of the preceding sentences incorporates text from a publication now in the public domainChisholm, Hugh, ed (1911). "Establishment of a Port". Encyclopædia Britannica. 9 (11th ed.). Cambridge University Press. p. 789.