OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

6.20°S, 41.87°WAmerica/Sao_Paulo

Daylight+20.5°

16:13:16

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM9h 21m of true darkness · 11h 43m total night

DaylightCivil (−6°)Nautical (−12°)Astro (−18°)Dark Sky (<−18°)

TRUE DARK SKY WINDOW

Sunset17:40

Civil Dusk18:01

Nautical18:26

Full Dark18:51

Nadir23:31

Dark Ends04:12

Nautical04:37

Civil Dawn05:01

Sunrise05:23

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE8.9°

DISTANCE379,701 km

Moonrise15:33

Moonset03:51

HorizonAbove

LUNAR INTERFERENCE INDEX14% · Minimal Lunar Glare

Sky background remains dark; faint nebulae and distant galaxies are distinct.

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

37/100

Challenging Stargazing

High cloud cover or severe light interference. Recommend bright planetary observation or indoor planning.

CLOUD COVER15%

HUMIDITY50%

VISIBILITY18 km

DEW POINT10.8°C

PLANETARY EPHEMERIS & ALMANAC

Visible Planets Tonight

All times calibrated to America/Sao_Paulo

PLANET	STATUS	MAGNITUDE	ALTITUDE	AZIMUTH	CONSTELLATION	RISE	TRANSIT	SET	EQUIPMENT
Venus♀	Visible Low	-4.3	18.8°	253°	Libra	05:16	11:25	17:34	Naked Eye
Jupiter♃	Below Horizon	-2.0	-42.6°	284°	Leo	01:24	07:23	13:18	Naked Eye
Saturn♄	Below Horizon	0.3	-0.9°	89°	Pisces	16:17	22:17	04:22	Naked Eye
Mars♂	Below Horizon	1.0	-50.3°	291°	Cancer	00:52	06:48	12:42	Naked Eye
Mercury☿	Optimal Visibility	0.4	38.6°	248°	Libra	06:38	12:49	19:00	Binoculars
Uranus♅	Below Horizon	5.6	-52.2°	63°	Taurus	19:57	01:49	07:45	Binoculars
Neptune♆	Rising / Setting	7.8	6.2°	90°	Pisces	15:46	21:48	03:49	Telescope

TONIGHT'S VIEWING SCHEDULE

When & Where to Look Tonight

A simple guide to when each object is above your horizon. No astronomy chart reading required.

BEST TIMEHighest in your sky

The MoonNaked Eye · High in the sky

RISES15:33

BEST TIME21:43N · 80° high

SETS03:51

Reaches about 80° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:24

BEST TIME07:23N · 69° high

SETS13:18

Reaches about 69° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:17

BEST TIME22:17N · 82° high

SETS04:22

Reaches about 82° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:16

BEST TIME11:25S · 78° high

SETS17:34

Reaches about 78° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES00:52

BEST TIME06:48N · 66° high

SETS12:42

Reaches about 66° above the horizon at its highest point.Distinctive crimson hue; polar ice cap discernible near opposition.

OBSERVING LOG & TARGET LIST

Tonight's Prime Deep-Sky Targets

0 / 6 targets logged tonight

M31 / NGC 224 · Andromeda

Andromeda Galaxy

Spiral Galaxy (2.5M ly)

Our galactic neighbor; visible as a ghostly oval smudge with dense radiant stellar core.

M45 · Taurus

The Pleiades (Seven Sisters)

Open Star Cluster

Breathtaking blue diamond cluster enshrouded in delicate interstellar reflection nebulosity.

M42 / NGC 1976 · Orion

Great Orion Nebula

Diffuse Emission Nebula

Star nursery harboring the brilliant Trapezium cluster with sprawling bat-wing filaments.

NGC 869 & NGC 884 · Perseus

The Double Cluster

Twin Open Clusters

Pair of spectacular shimmering jewel-boxes bursting with ruby supergiant stars.

M13 / NGC 6205 · Hercules

Great Globular Cluster in Hercules

Globular Cluster (300k stars)

Massive beehive of ancient stars packed tightly together into a blazing central ball.

M57 / NGC 6720 · Lyra

The Ring Nebula

Planetary Nebula

Delicate glowing smoke-ring left behind by a dying star 2,500 light-years away.