Declination 2 topics · 2 sources ScienceEnergyThe angular position of the sun at solar noon with respect to the plane of the equator.US DOE Office of Energy Efficiency & Renewable Energy — Glossary of Energy-Related Terms retrieved 2014-05-26 Cite ScienceWeatherThe latitude that the sun is directly over at a given time. The declination is ~23°N at the summer solstice, ~23°S at the winter solstice, and 0° (over the equator) at the spring and autumn equinoxes.NOAA National Weather Service — National Weather Service Glossary Cite