Split Rail, Inc.


Nav Clock

for iPhone / iPad

Nav Clock is based upon those cool multi-function weather station clocks that you see on people’s desks in their offices.  Proudly display your iPhone® or iPad® in its charging cradle or while on the go.  Nav Clock is perfect for travelers, weather enthusiasts, pilots, hikers, and everyone else.  Optimized for iOS 15, including Dark Mode.


• Nav Clock brings together all of the current information you need in

  one clean format.

• Weather

• Astronomical Times calculated for any date:

      Astronomical Twilight 

      Nautical Twilight

      Civil Twilight (Dawn & Dusk)

      Golden Hour

      Solar Noon (Transit)

      Total Hours of Daylight

      Daylight gain/loss each day

• Moon Phases and moon phase detail.  Moon Phase calculated for any date

   from January 6, 2000.

• Weather Station Information

      Station Name

      Station Location

      Station Elevation and Distance

      what3words address

      Pressure Altitude

      Density Altitude

      Ceiling Information

      Conditions of Flight

      Weather Observation Date/Time

• Copyable current location coordinates so that they may be pasted into

   other apps.

• Course and Speed is great for hikers!

• Makes a great night stand clock!

• Military time Zones

• The background sky condition photographs change to closely approximate the current sky conditions in your vicinity with gorgeous original photography.  Over 90 background sky condition photographs are included.

• Optional backgrounds and text colors from which to choose.  Select from a

   pallette of millions of colors.

• Displays the time and location, offset from Greenwich Mean Time, aviation “Zulu” time (GMT), geographic coordinates, Maidenhead coordinates, elevation above mean sea level (requires GPS), and the accuracy of the location.  Optional date formats to choose from.  Optional Military time Zones.

• The barometric pressure is calculated natively on the iPhone and a trending indicator for steady, rising, falling, rapidly rising, or rapidly falling is displayed.  Nav Clock is one of only a few weather Apps that display a barometric pressure trend indicator.  

• Current weather station information for your location including “Feels Like” temperature, the Wind Chill or Heat Index based upon the temperature, wind, and humidity.  A fine resolution of the current weather conditions is displayed including wind gusts, wind variability, and visibilities as low as “<50” feet in some cases.

• Julian date options.

• Many preference settings allow you to customize the format of the display including the metric system, 24-hour time, Degrees-Minutes-Seconds, Degrees-Minutes.M, WGS 84, Maidenhead, or what3words coordinate systems, Fahrenheit, Celsius, or both, tenths of degrees, aviation weather formats, disable auto-lock (prevents the screen from sleeping), and more.

• Accessibily support for the main view to bold the text and larger font sizes on the detail views.

• Languages: English, Spanish, German.  Partial translations for Portuguese, Romanian, Russian, and Swedish.

Apple, the Apple logo, iPad, iPod, and iTunes are trademarks of Apple Inc., registered in the U.S. and other countries.  iPhone is a trademark of Apple Inc.