OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

20.98°S, 48.91°WAmerica/Sao_Paulo

Daylight+68.6°

13:20:07

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 43m of true darkness · 11h 16m total night

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

TRUE DARK SKY WINDOW

Sunset18:21

Civil Dusk18:44

Nautical19:11

Full Dark19:38

Nadir23:59

Dark Ends04:21

Nautical04:48

Civil Dawn05:15

Sunrise05:37

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION92%

ALTITUDE-37.0°

DISTANCE380,348 km

Moonrise16:04

Moonset03:39

HorizonBelow

LUNAR INTERFERENCE INDEX0% · Minimal Lunar Glare

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

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

42/100

Fair Stargazing

Partial haze or lunar wash. Bright clusters, double stars, and prominent planets remain well visible.

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♀	Optimal Visibility	-4.3	69.3°	274°	Libra	05:23	11:53	18:22	Naked Eye
Jupiter♃	Rising / Setting	-2.0	2.0°	286°	Leo	02:12	07:51	13:30	Naked Eye
Saturn♄	Below Horizon	0.3	-47.7°	113°	Pisces	16:46	22:46	04:49	Naked Eye
Mars♂	Below Horizon	1.0	-6.6°	286°	Cancer	01:43	07:16	12:50	Naked Eye
Mercury☿	Optimal Visibility	0.4	89.5°	274°	Libra	06:42	13:17	19:53	Binoculars
Uranus♅	Below Horizon	5.6	-76.1°	273°	Taurus	20:49	02:21	07:49	Binoculars
Neptune♆	Below Horizon	7.8	-40.3°	110°	Pisces	16:14	22:16	04:22	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

RISES16:04

BEST TIME22:12N · 65° high

SETS03:39

Reaches about 65° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES02:12

BEST TIME07:51N · 55° high

SETS13:30

Reaches about 55° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:46

BEST TIME22:46N · 68° high

SETS04:49

Reaches about 68° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:23

BEST TIME11:53N · 87° high

SETS18:22

Reaches about 87° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:43

BEST TIME07:16N · 51° high

SETS12:50

Reaches about 51° 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.