Solar Time vs Weather4D Routing Usage & Stats

This application shows the apparent solar time, the time you would see on a sundial at your current location. It is the combination of the mean solar time (which depends on the longitude at your current position), the time difference from the solar equation which changes over the year because of the ecliptic path of the earth around the sun and optional daylight saving in the summer. That means the solar time at 12:00pm (noon) is the time of the highest sun position. Features: - see the time difference in detail - toggle the display of the seconds - toggle between 12 and 24 hours - the background color changes according to the time difference from the solar equation - the location is automatically updated when you move - supports all iPhones and all iPads - supports the iPad multitasking (split view, ...)

Apple App Store
Paid
Weather

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Weather4D Routing

Weather4D Routing is an outstanding meteorological and routing application based on weather and ocean data in GRIB format as well as the speed characteristics of the sailing boat (polar) and its minimum speed when operated with its engine. It benefits from an interface derived from the “Routing & Navigation” version. Weather GFS model is provided by default. In addition, over 35 weather and oceanographic models are available with a yearly subscription (in-app purchase). Queries and downloads are fully customizable. The application makes it possible to create your own geographical zones and to select the characteristics of the GRIB files to download: choice of data, resolution, periodicity, file size, etc. GRIB files can be downloaded wherever you are from our servers through a regular or satellite internet connection. Weather4D Routing displays the combined data as layered layers. All the data of a selected model is displayed by an animation in continuous time scrolling or in manual scrolling on the map. The weather forecast is displayed in one or two windows (iPad only), offering several display combinations of the same area: navigation and weather, weather and waves or currents, comparison of different models. The two windows can be disassociated for displaying the same area at different scales. Routing Weather4D Routing makes it possible to optimize sailing or engine, or mixed sail-engine routes. From a theoretical route, a routing algorithm will take into account wind force and wave height constraints. When sailing, the boat polar combined with wind and current forecasts will be used to optimize performance, comfort and safety. Several routes can be displayed to compare the outcome of different options: different forecast patterns, departure dates and times, selected constraint values. The routing can be restarted at any moment during navigation from the actual position of the boat. Default Models and Charts ———————————— GFS global forecast model at 0.25 °, 0.5 °, 1 ° and 2 ° resolutions. BING global chart OSM (Opens Street Map) global chart Optional Models (in-app purchase): ——————————————————— Weather -------- NAM USA GEM Global COAMPS Europe, West Atlantic, Central America, East Pacific ICON-EU Europe ARPEGE Global, Europe AROME France, Antilles, Guyane, Polynésie, Calédonie, Indien AROME HD France WRF France, Europe, Greece, NW Africa, Azores, Lesser Antilles, Greater Antilles Waves ------- MFWAM Global, Europe, France FNMOC WW3 Global, Europe Currents --------- MyOcean Global, IBI, NWS, Baltic, Med NCOM AMSEAS, USEAST, ALASKA, SOCAL, HAWAII