OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

12.04°S, 41.19°WAmerica/Sao_Paulo

Daylight+23.8°

16:00:22

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM9h 8m of true darkness · 11h 33m total night

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

TRUE DARK SKY WINDOW

Sunset17:42

Civil Dusk18:04

Nautical18:29

Full Dark18:55

Nadir23:28

Dark Ends04:02

Nautical04:28

Civil Dawn04:53

Sunrise05:15

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE6.2°

DISTANCE379,749 km

Moonrise15:31

Moonset03:46

HorizonAbove

LUNAR INTERFERENCE INDEX10% · Minimal Lunar Glare

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

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

38/100

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	22.8°	255°	Libra	05:06	11:22	17:39	Naked Eye
Jupiter♃	Below Horizon	-2.0	-41.3°	279°	Leo	01:27	07:20	13:09	Naked Eye
Saturn♄	Below Horizon	0.3	-3.6°	89°	Pisces	16:15	22:15	04:19	Naked Eye
Mars♂	Below Horizon	1.0	-49.6°	284°	Cancer	00:57	06:45	12:31	Naked Eye
Mercury☿	Optimal Visibility	0.4	42.9°	253°	Libra	06:26	12:47	19:07	Binoculars
Uranus♅	Below Horizon	5.6	-56.9°	70°	Taurus	20:03	01:46	07:33	Binoculars
Neptune♆	Rising / Setting	7.8	3.7°	90°	Pisces	15:43	21:45	03:47	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

RISES15:31

BEST TIME21:40N · 74° high

SETS03:46

Reaches about 74° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:27

BEST TIME07:20N · 64° high

SETS13:09

Reaches about 64° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:15

BEST TIME22:15N · 77° high

SETS04:19

Reaches about 77° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:06

BEST TIME11:22S · 84° high

SETS17:39

Reaches about 84° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES00:57

BEST TIME06:45N · 60° high

SETS12:31

Reaches about 60° 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.