UKHO Easy Tide The UKHO has upgraded its tidal predictions service and it now offers tidal predictions for 7000 locations around the world and time range from 100 AD to 50 years into the future. Predictions for the first 7 days are free of charge and downloadable. Admiralty Easy Tide is accessible at this URL http://www1.ukho.gov.uk/easytide/EasyTide/index.aspx