When they are in the shade, it's night time. SEYMOUR: Hello, Seymour Science here! As we all know, sometimes it’s day… and sometimes it’s night… but why do we have day & night? My guest ...

At Spring Equinox, day and night are aligned, On this fourth Solar Term, the sun shines directly above the equator, bringing equal daylight and darkness worldwide, hence its name. From this day ...

There is both equal night and day on the equinox, as the center of the sun is directly over the equator. In Portland, the sun ...