First Quarter

When you can see it

It rises around noon, stands highest at sunset, and sets around midnight, which makes it the easiest phase to catch in the early evening. It is bright enough to see in full daylight during the afternoon if you know where to look.

What is happening up there

The moon sits 90 degrees from the sun in the sky, so we see its lit half edge-on and exactly one half of the visible disc is bright. The name confuses people because the disc looks half full: the quarter refers to a quarter of the orbit completed, not a quarter of the face lit.

What a first quarter is said to mean

Traditionally the decision point of the cycle, the phase associated with friction and commitment rather than beginnings. The waxing half's momentum meets its first real resistance here in most readings.

Worth saying plainly: these readings are tradition, not fact. The astronomy on this page is computed and checkable; the meanings are a cultural inheritance, offered because people find them enjoyable.

What to do under it

This is the best moon for a telescope or binoculars. Along the terminator, the line between lit and unlit, the sun is rising over the craters at a grazing angle and the shadows are at their most dramatic. A full moon, lit head-on, looks flat by comparison.