I've been using this program for a while now. It generates an ical calendar that you make by selecting tides and or sunrise/sunsets. Then you open ical/file/import and name it. piece of cake!
I have included the program and the calendar i made. The cal has sunrise sunset times, but no tides.
clicking on the link will start the download. I will leave it up for a couple of weeks.
enjoy, and if anyone makes a cool calendar, feel free to share...
CLICK HERE!