OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

5.04°S, 42.46°WAmerica/Fortaleza

Daylight+22.2°

16:07:28

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM9h 23m of true darkness · 11h 45m total night

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

TRUE DARK SKY WINDOW

Sunset17:41

Civil Dusk18:02

Nautical18:27

Full Dark18:52

Nadir23:34

Dark Ends04:15

Nautical04:40

Civil Dawn05:05

Sunrise05:26

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE7.0°

DISTANCE379,722 km

Moonrise15:35

Moonset03:54

HorizonAbove

LUNAR INTERFERENCE INDEX11% · 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/Fortaleza

PLANET	STATUS	MAGNITUDE	ALTITUDE	AZIMUTH	CONSTELLATION	RISE	TRANSIT	SET	EQUIPMENT
Venus♀	Visible Low	-4.3	20.4°	253°	Libra	05:20	11:27	17:35	Naked Eye
Jupiter♃	Below Horizon	-2.0	-40.4°	285°	Leo	01:25	07:25	13:21	Naked Eye
Saturn♄	Below Horizon	0.3	-3.0°	89°	Pisces	16:19	22:20	04:25	Naked Eye
Mars♂	Below Horizon	1.0	-47.9°	291°	Cancer	00:53	06:50	12:46	Naked Eye
Mercury☿	Optimal Visibility	0.4	40.0°	247°	Libra	06:42	12:52	19:01	Binoculars
Uranus♅	Below Horizon	5.6	-53.5°	61°	Taurus	19:57	01:51	07:49	Binoculars
Neptune♆	Rising / Setting	7.8	4.2°	90°	Pisces	15:49	21:50	03:52	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

RISES15:35

BEST TIME21:45N · 81° high

SETS03:54

Reaches about 81° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:25

BEST TIME07:25N · 71° high

SETS13:21

Reaches about 71° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:19

BEST TIME22:20N · 84° high

SETS04:25

Reaches about 84° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:20

BEST TIME11:27S · 77° high

SETS17:35

Reaches about 77° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES00:53

BEST TIME06:50N · 67° high

SETS12:46

Reaches about 67° 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.