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![]() "Jeff Morris" wrote in message news ![]() "Donal" wrote in message ... All I need to know is that when there is a full, or new, moon the HW will be around 13:00. Well, there are a few other details that aren't stated, like the presumption the tides are semi-diurnal. If you know the times of moonrise/moonset then the relationship between lunar noon (the midpoint of rise and set) and high tide is relatively fixed. Thus, the relationship you observe about the time of high tide and the state of the moon can be used throughout the month. I'm assuming you're talking about Portsmouth. If so, you should double check your understanding of the tides. Full Moon last occurred on about 5 hours ago, May 4 at 9:35 pm BST. High tide was at 12:06 am on May 5. Fair enough! I should have said that springs were at 13:00. Regards Donal -- |
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