Sun path
—
Hour angle runs left (east) to right (west); height is the sun's true altitude. Below the horizon the ground darkens through the three twilights — the number written on each band is how long that twilight lasts on this date.
Daylight through the year
—
Hover or drag the curve to travel through the year. The dashed rules mark the two solstices and two equinoxes.
Seven days from the selected date
Day Sunrise Sunset Daylight Change vs prev. Trend
Positions from the NOAA solar equations (declination, equation of time, hour angle at −0.833° for the solar disc plus refraction): typically within a minute of published tables.