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There are two phases of the moon that appear to be a half disk: the first quarter and the third quarter.

The entire cycle of moon phases takes about 28 days (27.3217 days). Counting the day of a new moon as the first day, then the phases in order are:

• waxing crescent

• first quarter (a half lit moon resembling the letter "D") at end of week one

• waxing gibbous

• full at end of week two

• waning gibbous

• third quarter (a half lit moon resembling the letter "C") at end of week three

• waning crescent

• and back to the new moon, completing the cycle after week four

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13y ago
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a half moon.

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SkyBitz

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3y ago
First quarter

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Q: What moon phase is it when the right half of the moon is illuminated?
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Related questions

What phase of the moon is it when you see the moon getting half full and gettin fuller?

When the moon appears as a half-illuminated disk, and the illuminated portion is growing from one night to the next,the phase is known as "first quarter".


Right half of moon is illuminated.?

When the right half of the moon is illuminated it would be called first quarter. (That's when you see the Moon from the northern hemisphere.)


What moon phase is after a third-quarter moon?

The right half of the moon is illuminated.


What side of the moon would have reflected light if it is in a waning phase?

If you live in the Northern Hemisphere, the left side of the moon is illuminated. If you live in the Southern Hemisphere, the right side of the moon is illuminated. Regardless of hemisphere, the western half of the moon is illuminated during the waning moon phases.


What is the minimum percent of the moon that needs to be illuminated in order for the phase to be called gibbous?

A "gibbous" Moon has between 51% and 99% of the illuminated side of the Moon visible from Earth. Just to be precise; the Moon is always 50% illuminated. The Moon is a rocky ball, half in sunlight and half in darkness. As the Moon orbits the Earth, the same face of the Moon is always visible. From the Earth, we see "phases" of the Moon as the Moon orbits the Earth. At the new moon phase, the illuminated half of the Moon is the "far side" of the Moon; at the full, the illuminated half is the "near side".


When does the gibbous phase of the moon occur?

The gibbous phases of the Moon occur when the visible face of the Moon is more than half illuminated, but not fully illuminated.


How much of the total surface of the Moon is illuminated by the Sun when it is at quarter phase?

The moon's surface is always half illuminated. We on Earth see 0 to 100% illumination of the side that faces use, depending on what phase the moon is at. Quarter phases, first and last, are half illuminated when seen from Earth.


What is after the phase new moon in moon phases?

All of the other phases can be seen after a New Moon, if you just wait long enough.The one that immediately follows the New Moon is the waxing crescent phase.


What is the opposite of a gibbous moon?

A gibbous moon is a phase of the moon where the illuminated half is greater than the dark half but it is not full. The opposite of a gibbous moon is known as a crescent moon.


When does a waning phase occur during a lunar cycle?

The Waning Phase in the lunar cycle occurs as the moon shrinks from the Full Moon to the New (Dark) Moon. Note: You can tell when you are in the Waning Phase when the Left Side of the Moon is illuminated. Conversely, if the Right Side is illuminated, the Moon is Waxing.


What is a moon phase a week after a full moon?

We see a Half Moon illuminated. The name of this phase is called Last Quarter. First Quarter is 1 week before a Full Moon.


What is the moon phase a week after a full moon?

We see a Half Moon illuminated. The name of this phase is called Last Quarter. First Quarter is 1 week before a Full Moon.