The Fourth Day

The Fourth Day is an astronomical clock and almanac for your iPhone or iPod Touch. Customized for your location using location services, or user entered latitude and longitude, The Fourth Day displays data about the daily, monthly, and yearly astronomical events related to time keeping.

The Fourth Day goes beyond sunrise and set, and moon phases. It also displays the start and ending times of civil, nautical, and astronomical twilights and lunar and solar transits. Lunar and solar perigee and apogee dates and distances, the dates and times of equinoxes and solstices, and the longest and shortest day of the year for your geographic location. Distance values can be displayed in miles or kilometers. In addition all calculations are done on the device and no Internet connection is required.