Sundial Builder vs Daff Moon

HORIZONTAL SUNDIAL Built on a flat horizontal surface. - Hour lines converge toward true south in the northern hemisphere, or true north in the southern hemisphere. - The gnomon is fixed at the "center of the sundial," where the hour lines meet, is tilted relative to the horizontal plane by an angle equal to the absolute value of the local latitude, it must point to the celestial north pole (northern hemisphere) or celestial south pole (southern hemisphere). Required data: - Latitude between 5° and 80° (use negative values for southern hemisphere) - Longitude (used only to calculate correction between solar time and civil time) - Location can be entered manually or retrieved via the device's GPS - Gnomon length: between 10 cm and 30 cm. The final tilted length is calculated by the app - Equation of Time and longitude correction are shown on screen and in the CSV file --- VERTICAL SUNDIAL Built on a vertical wall facing any direction (south, west, east, north, or intermediate). - Hour lines start from the "center of the sundial" and extend downward - The gnomon is fixed at this center point - The gnomon is inclined based on latitude and wall orientation. It equals the latitude only when facing due south or due north - The gnomon must point to the celestial north pole (northern hemisphere) or celestial south pole (southern hemisphere) Required data: - Latitude between 5° and 80° (use negative values for southern hemisphere) - Longitude (used only for time correction) - Location can be entered manually or via GPS - Gnomon length: between 10 cm and 30 cm. The app computes the final inclined length - Wall orientation: - Northern hemisphere: from 270° (east) to 360°≡0° (south) to 90° (west) - Southern hemisphere: from 270° (east) to 180° (north) to 90° (west). --- GENERAL NOTES - The scale factor changes the sundial’s visual size but not the CSV values - Sundials near the edge of a time zone may show up to 30 minutes of difference between solar time and civil time - The app calculates the inclined gnomon length from the center - Alternatively, you can place a perpendicular gnomon from the origin point; in this case, only the tip’s shadow indicates the time - Wall orientation is measured clockwise from south: - 0° = South - 90° = West - 180° = North - 270° = East

Daff Moon — Your Personal Astronomical Companion Explore the sky like never before with Moon & Sun tracker, an astronomical app that helps you stay connected with the movements of the Moon and the Sun. Whether you’re an amateur astronomer, or simply curious about the night sky, this app gives you accurate and detailed information about celestial events and daily cycles. Main Features: - Current Moon Phase: See today’s phase of the Moon. - Moon Phases Calendar: Browse phases for any day, month, or year — past or future. - Sunrise & Sunset Times: Get precise information about sunrise, sunset, and twilight times for your location. - Moonrise & Moonset: Know exactly when the Moon appears and disappears from the sky. - Day & Night Duration: Track how the length of day and night changes throughout the year. - Sun and Moon Coordinates: View current azimuth, altitude, and declination — or check coordinates for any selected date. - Interactive Sky Sphere: A simple, intuitive sky view shows the real-time positions of the Sun, Moon and major planets relative to you. - Information about twilight, blue and golden hour. - Supermoons - Altitude charts of the Moon, the Sun and the planets - Day length chart during the year The app is under continuous development — new features and refinements are added regularly to make your stargazing experience even more accurate and enjoyable.