Jay check out the program I mentioned before (Tide24.exe). Its a free ware program based on a program obtained from the National Oceanographic and Atmospheric Administration. I've used it for several years and find it to be an exact match (or nearly within a minute or two) to what is published in several fishing mags. It has ALL the US NOAA Reference Stations also. Programmer claims accuracy for at least several century's.
Its DOS based so it its not pretty - but does graphs and charts.