TodaySunday, August 23, 2026

Moon Phase Today, August 23, 2026: Waxing Gibbous at 80% Illumination

Eighty percent lit and closing on the smallest full moon of 2026. Moonrise and moonset for twelve cities, and the eclipse Asia will miss entirely.
August 23, 2026
The moon phase today is a waxing gibbous, seen here above a cloudy Indian Ocean from the International Space Station
A waxing gibbous moon above a partly cloudy Indian Ocean, photographed from the International Space Station on 26 June 2026. [Image Source: NASA]

The moon stopped receding from Earth yesterday morning and has been closing ever since. That reversal is the quiet event of the week, and it is why the full moon arriving on Friday will be one of the smaller ones of 2026. The moon phase today, August 23, 2026, is a Waxing Gibbous, around 80 percent illuminated and roughly eleven days into the cycle that opened with the total solar eclipse of August 12.

Apogee fell at 08:20 UTC on August 22, at 404,644 km. By midnight tonight the moon has already pulled back inside 403,200 km, and it keeps closing right through Friday’s full moon without getting anywhere near perigee first. Five days is not long enough to make up that deficit, which is the whole reason the Sturgeon Moon will look slightly undersized to anyone who happens to be comparing.

Moon phase today at a glance, 23 August 2026 · Source: Meeus ephemeris, cross-checked against NASA
MeasureValue
DateSunday, August 23, 2026
Moon phaseWaxing Gibbous
IlluminationAbout 80 percent (76 to 84 percent by location)
Moon ageAbout 11 days (10.3 days at 00:00 UTC, 11.3 by midnight)
Distance from Earth404,393 km at 00:00 UTC, closing to 403,115 km
Apparent diameter29.6 arcminutes, against 33 at perigee
Elongation from the sun121 degrees at 00:00 UTC, 132 by midnight
Zodiac signCapricorn all day, 1 to 13 degrees
Best viewingSouth and southwest, from late afternoon until roughly 2 am
Last phaseFirst Quarter, August 20 at 02:46 UTC
Next phaseFull Moon, August 28 at 04:18 UTC
Illumination is continuous and rises through the day, so the figure quoted for a single date depends on the time zone and the moment of calculation.

The lit fraction climbs about four percentage points over the course of the day, from just over 76 percent at midnight UTC to nearly 84 percent by the end of it. Any figure in that band is a defensible answer for August 23 depending on longitude and the moment the calculation was run, which is why two reputable sites can print different numbers for the same date without either being wrong.

What the moon phase today means: three days past first quarter

The moon now sits about 127 degrees east of the sun along the sky at midday UTC, up from 116 degrees at this point yesterday. That angle is what governs everything visible from the ground. It puts the moon high in the south by early evening and keeps it up until roughly two in the morning across most of the northern hemisphere.

The terminator, the line dividing lunar day from night, has retreated far enough east that about four fifths of the near side is now in full sunlight. What is left is a narrowing band of low-angle light down the eastern limb, and that band is the only part of the disc worth pointing an instrument at. Along it, crater rims still throw shadows long enough across their own floors to resolve in ordinary binoculars. Everywhere else the sun is high overhead and the surface reads flat.

That band shrinks a little every night from here. By Friday it is gone, and the full moon presents a face with no shadows on it at all, which is why experienced lunar observers tend to treat the gibbous week as the good one and the full moon as the night to look at something else.

Moonrise and moonset times for August 23, 2026

All times below are local and calculated for the city centre. They matter as much as the moon phase today does, because a phase you cannot see from your latitude is of limited use.

Moonrise and moonset, 23 August 2026, local time · Source: Meeus ephemeris, city-centre coordinates
CityMoonriseMoonsetIllumination
New York17:2502:1981%
Chicago17:2502:1182%
Los Angeles17:0302:4782%
Toronto17:5902:3081%
London18:1801:1580%
Dubai15:4102:1079%
New Delhi15:5002:0078%
Mumbai15:4302:4278%
Singapore15:2403:4378%
Tokyo15:2500:4877%
Sydney12:3903:5377%
Johannesburg13:3403:5880%
Times are for the city centre and shift by a few minutes across a large metropolitan area. Moonrise falls on August 23 in every city listed; every moonset falls after midnight and therefore carries an August 24 date. Illumination is quoted at local midday.

The pattern in that table is worth reading rather than skimming. Sydney gets the moon for more than fifteen hours; New York gets it for under nine. Nothing about the moon has changed between those two cities. The moon is sitting at a southerly declination this week, deep in the Capricorn stretch of its orbit, and a body south of the celestial equator spends longer above the horizon the further south you stand. Southern hemisphere readers have the better view of this particular gibbous, and they will have the worse one in a fortnight when the geometry reverses.

A gibbous moon sitting low above the Pacific Ocean at dusk, seen from the International Space Station
A gibbous moon low above the Pacific at dusk, from the International Space Station on 30 May 2026. A moon this far past first quarter clears the horizon in the afternoon and stays up past midnight. [PHOTO Credit: NASA]

Past apogee: the disc starts growing again

None of this distance business is visible to the eye. The disc spans 29.6 arcminutes tonight against a perigee moon’s 33, and a few percent of angular width sits well below what human vision resolves without a reference to compare against. It is measurable rather than noticeable.

Where it does show up is in the numbers attached to Friday. A full moon near apogee is the opposite of a supermoon, and it is roughly 12 percent narrower than the largest full moons of the year. Photographs taken with the same lens on the same tripod would show the difference immediately. A person glancing up will not see it, and any coverage suggesting otherwise is describing a chart rather than a sky.

The full nearside of the Moon showing dark lava plains and the bright rays of Tycho crater
The nearside of the Moon, photographed from Artemis II on 4 April 2026. The dark patches are ancient lava flows; the bright point low on the disc with rays running out of it is Tycho crater. [PHOTO Credit: NASA]

The Sturgeon Moon and a 96 percent eclipse that Asia will miss

Friday’s full moon is the Sturgeon Moon, named for the lake sturgeon that Algonquian-speaking nations of the Great Lakes caught in greatest numbers under it. It falls at 04:18 UTC on August 28, it sits in Pisces directly opposite a Sun newly in Virgo, and it arrives inside Earth’s shadow.

According to NASA’s Scientific Visualization Studio, the partial phase opens at 02:34 UTC and greatest eclipse comes at 04:13 UTC, with 96.3 percent of the moon’s disc inside the umbra. That figure is worth being precise about, because NASA’s own skywatching bulletin for August quotes 93 percent for the same event. Both are correct. The 96.3 percent describes the fraction of the visible disc covered; the 93 percent describes the fraction of the moon’s diameter swallowed by the umbra. They are different measurements of the same geometry, and the gap between them explains most of the disagreement circulating online.

The practical point for anyone reading this in India is less pleasant. The eclipse is visible from North and South America and from parts of Europe and Africa, roughly 3.3 billion people in total. Across Asia the moon is below the horizon for the entire event. Delhi, Mumbai, Dubai, Singapore and Tokyo see nothing at all. What those cities get on Friday night is an ordinary, slightly undersized full moon that has already left the shadow by the time it rises.

Where the moon sits in the zodiac today

The moon crossed from Sagittarius into Capricorn at 21:05 UTC yesterday and spends the whole of August 23 in that sign, travelling from about one degree to thirteen. It stays there until Tuesday morning.

That position is an astronomical fact about ecliptic longitude, and it is the same measurement that produces the phase, the age, the distance, the rise and set times and the eclipse geometry above. What the position is taken to mean belongs to a different discipline with a different history, which our daily horoscope for 23 August covers separately.

Moon phase today: frequently asked questions

What is the moon phase today, August 23, 2026?

A Waxing Gibbous, about 80 percent illuminated and roughly eleven days past the new moon of August 12. It is three days past first quarter and five days short of full.

Is the moon getting closer or further away today?

Closer. Apogee was yesterday at 08:20 UTC. From today the moon closes on Earth for the rest of this cycle, though not quickly enough to make Friday’s full moon a large one.

Why do sites disagree on the illumination figure?

Because it changes continuously. On August 23 the lit fraction climbs from about 76 percent at 00:00 UTC to nearly 84 percent by the end of the day, so anything in that range is a legitimate answer for the same date.

When is the next full moon?

August 28, 2026 at 04:18 UTC. It is the Sturgeon Moon and it coincides with a deep partial lunar eclipse.

Can I see the August 28 lunar eclipse from India?

No. The moon is below the horizon across Asia for the whole of the eclipse. It is visible from the Americas and from parts of Europe and Africa.

Why does the moon stay up so much longer in Sydney than in New York tonight?

Because the moon is at a southerly declination this week. A body south of the celestial equator is above the horizon longer the further south the observer stands, and the effect at these latitudes is worth more than six hours.

Can I still see earthshine?

No. Earthshine needs a crescent thin enough not to drown it out, below roughly 40 percent illumination. At four fifths lit it is out of reach until the waning crescent in early September.

Is a waxing gibbous good for stargazing?

Not for faint objects. The moon is up through most of the dark hours and bright enough to wash out the sky. It is one of the better nights of the month for looking at the moon itself.

When is the next new moon?

September 11, 2026 at 03:27 UTC. That closes the cycle that opened with the total solar eclipse of August 12.

The moon phase today gains roughly one percentage point of illumination every seventy-five minutes at this stage of the cycle, so the figures on this page are calculated for August 23, 2026. Check back tomorrow for the next entry in the series.

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