Apps - World Tide 2010
Frequently Asked Questions Q: Do I need an internet connection? A: No. But, if you have location services enabled, you can use it to locate your position on the map. Q: Is there a tide station in my area? A: Most likely, yes. There are multiple stations throughout the world. However, some countries refuse to give us their data without charging us what they would charge professional navigation software companies. But, if you need professional software, then you need to pay a lot more for it. This app is for non-professional use and it is priced accordingly. Q: Are the tide predictions accurate? A: Most of the time they are within a few percent. The tide predictions are based on dates and station harmonic constituents. It is based on real-world measurements and it can be very accurate at times. However, there is no tide prediction software that can account for things like storms or natural disasters. Also note that the high and low tide levels are rounded to the nearest 1/10th of an hour. Q: Can I get more than 7 days of predictions? A: No. Our free license agreement prohibits predictions of more than 6 days plus the current day. Q: How do I reset the time? A: Tap on the clock and the time will snap back to within 6 minutes of the current time. Q: Does this account for daylight savings time. A: Yes. The closest city for each tide location is used as a reference to determine if daylight savings time is observed. Adjustments are made accordingly to the graph. Q: How do I select a station? A: Dragging the map with your finger will change the selected port (in red) closest to the center of the screen. Zoom in by double tapping or pressing the zoom-in button if desired. Q: What happens in 2011? A: World Tides 2010 only has tide predictions for the year 2010. At the end of the year, the program will run out of data and you will see an expired message. World Tide 2011 will be released as a separate product. We have no choice but to do this because our license for the data expires at the end of the year as well. Q: How does it predict the moon and sun events? A: This is done based on the lat/lon of the tide station. It uses some very complicated formulas that we can't begin to explain because we barely understand them ourselves. But, thanks to some very smart scientists, this software attempts to accurately predict rise and set times down to the minute. Q: Is it possible to have two sun rise or sun sets in one day? A: Believe it or not, YES! And you don't even need a daylight savings time event to happen. You'll have to Google it for more details, but the software was written to handle this occurrence. We are fairly certain we got it right. Q: What are the shaded areas for in the Moon/Sun bar? A: Black = Night with no moon, Gray = Night with a moon, Blue = Day with no moon, Light Blue = Day with a moon. This bar is intended for a quick glance at the day. For details, just hit the Details tab at the bottom. Q: Why does Tide Graph have more US stations? A: Because Tide Graph uses an entirely different set of data. World Tide licenses its data from a different source. Q: Can you add more tides to the software? A: No, we have no control over the list of tide stations. You can try writing your local hydrological office and ask them to set up measurement stations for more tide locations. Known Issues The exact time of the high and low tide is calculated based on the peak and valley of the curve. When the curve is pretty flat, then the high and low tide times span over longer periods of time. In some cases, these times could be up to an hour or two long. So, the exact time of the high and low times may not match other predictions. This is why we show you the curve. Just knowing the high/low tide times does not tell you very much. |
