iCaelum

iCaelum brings the sky above you into one app: where the Sun and Moon are, when the light will be good, what the weather will do, and whether it is safe to be outside. Every screen has its own sky and colours, and Home follows the daylight where you are. ANY PLACE, ITS OWN TIME Use your location or choose any place in the world: search a town, drop a pin or type coordinates. The whole app follows it, and every time is shown in that place's local time. SKY NOW See your sky at a glance: the Sun's arc through the day with golden hour, blue hour and twilight, where the Sun and Moon are now, sunrise, sunset, day length and tonight's Moon. TEN PROFILES FOR WHAT YOU DO • Photographer: a light dial for the whole day, golden and blue hours, a shadow calculator and a time-lapse planner • Beach Lover: UV through the day, tanning windows, shade, a live shadow and sunscreen reminders • Gardener & Farmer: planting by the Moon, frost risk, sunlight and solar energy • Hiker / Outdoor: daylight left, last light, route exposure, campsite light and an offline SOS signal • Fisherman & Hunter: solunar feeding periods, tides, wind and weather • Architect: sun paths, building shade, façade sunlight, an annual 3D sky and solar energy • Event Organizer: evening light, weather, public holidays and a rain reminder • Sailor & Navigator: Sun, Moon and wind bearings, celestial sights, navigation stars, tides and current-aware passages • Night Runner: when you need lights, mapped lighting, visibility and surface conditions • Astronomer: darkness, sky quality from satellite night-light data, planets, meteor showers, aurora and clouds SUN & MOON • Today's Sun and Moon: their path through the day, position, rise, transit and set • A year ribbon and a full-year almanac for the Sun and Moon • Both solstices, with the day compared with today • Golden and blue hours for any date • Upcoming solar and lunar eclipses for your place: what you will see, how much is covered and when FORECASTS A 48-hour ribbon of temperature, rain and sky, then an hourly table and daily outlook. iCaelum picks the best source for the place: national weather services where they apply (U.S. National Weather Service, SMHI, FMI, Hong Kong Observatory, Taiwan's Central Weather Administration) and Yr (MET Norway) elsewhere. Compare with Open-Meteo, WeatherAPI.com or OpenWeather, with an AI summary of the next 24 hours. SENTINEL Your outdoor safety monitor: a 24-hour exposure dial for UV, air quality and pollen, an outdoor safety index, asthma, heat and road risk, grass, tree and weed pollen on international levels, and official MeteoAlarm weather warnings. Set your own alerts. TRACKERS Find the Sun and Moon on a 2D sky chart that turns with your compass, or through the camera: the AR viewfinder shows where to turn and tilt, with sound or vibration as you get close. SHADOWS, WINDS & RADARS • Shadow length and direction for any object, place and time, drawn to scale • Live wind on a map and an animated wind forecast • Rain radars from RegnRadar, DMI, MeteoBlue and RainViewer Every screen has a detailed guide explaining what you see. Units follow your preference: °C or °F, m/s or mph, mm or inches. iCaelum calculates the Sun and Moon on your iPhone and gets weather, air and tide data through its own service. No account is needed.