Weather & Astronomy Reference

The moon phase calendar scans the moon's phase across the whole year in your browser (using the open-source SunCalc astronomy formulas) and pinpoints the exact moment of each New Moon, First Quarter, Full Moon and Last Quarter. There is no API involved; times are shown in your local timezone and are accurate to within a minute or two. Because the synodic month runs about 29.53 days, each quarter falls roughly 7.4 days after the last, and a calendar year holds twelve or thirteen full moons. For tonight's live phase, open the Moon Phase tool instead.

Each city's sunrise and sunset are shown in that city's own local time, for today's date. The values are computed in your browser from each city's coordinates, so the table works offline and nothing is uploaded. That means the Tokyo row shows Tokyo time and the New York row shows New York time, rather than converting every city into your own timezone. For one location with golden hour and day length, use the Sun Times tool instead.

WMO weather interpretation codes are a standard numeric system (from the World Meteorological Organization) that weather APIs such as Open-Meteo use to describe conditions — for example 0 is clear sky, 3 is overcast, 61 is light rain and 95 is a thunderstorm. The cheat sheet on this page maps every code to a plain-English condition and icon. The codes are grouped in families, so 51–57 cover drizzle, 61–67 rain, 71–77 snow and 95–99 thunderstorms.

The next total solar eclipse is August 2, 2027, crossing southern Spain, North Africa and the Middle East — one of the longest totalities of the century, at over six minutes. The eclipse calendar on this page covers solar and lunar eclipses through 2028, with dates, type, and broad visibility region from NASA predictions. Exact local times vary by location, so check a local source before you travel for one.