3 calculators in this category
- Sunrise & Sunset Time CalculatorNOAA solar position algorithm (after Meeus, Astronomical Algorithms)Enter a latitude, longitude, date and UTC offset and this calculator returns sunrise, sunset, solar noon, day length and the…
- Daylight Hours & Day Length CalculatorNOAA solar position algorithm (after Meeus, Astronomical Algorithms)This calculator gives the hours of daylight at any latitude on any date, together with the change from the day before, the…
- Twilight Times CalculatorUSNO twilight definitions (−6°, −12°, −18° solar altitude)Twilight is defined by how far the Sun sits below the horizon, not by how the sky looks, and the three standard thresholds are…