The Moon phases start with the invisible New Moon, while the first visible phase is the thin sliver of a Waxing Crescent Moon. Around a week later, half of the Moon’s visible surface is illuminated while the other half is in darkness at First Quarter Moon.
The illuminated part continues to grow into a Waxing Gibbous Moon, until 14–15 days into the cycle, we see the entire face of the Moon lit up at Full Moon.
The illuminated part then gradually shrinks into a Waning Gibbous Moon, and when it reaches the Third Quarter, the opposite half from the First Quarter is illuminated. From there, it fades into the Waning Crescent Moon before it finally disappears from view again, only to reemerge and repeat this cycle over and over.
Looks Different Around the Globe
The Moon phases are the same all over the world, both in the Northern and Southern Hemispheres. The same percentage and area of the Moon will be lit up no matter where on Earth you are.
The orientation of Waning Crescent Moon depends on the time, the date, your location, and the Moon’s position in the sky. Exactly where the lit up part of the Moon appears—the top, bottom, or the side—also depends on how high the Moon is in the sky.
Is the Moon upside-down in the other hemisphere?
The line, or curve, dividing the illuminated and dark parts of the Moon is called the terminator. The terminator of a Waning Crescent Moon can appear on the right side, the left, the top, or the bottom.
Sleep, crime, and menstruation: how Moon phases affect humans
No Crescent Moon in Calendars
There is no symbol for a Waning Crescent Moon in calendars as it is an intermediate Moon phase. Only the four primary phases are shown in calendars with the following symbols:
= New Moon 
= First Quarter 
= Full Moon 
= Third Quarter
The Moon illustration on our Moon phase pages changes as time passes and indicates more accurately, although not perfectly, the orientation of the illuminated part of the Moon.