Name: Astronomy: Real-Time Earth & Sky
Rating: 5 (2 reviews)
Author: Tyell14

Astronomy: Real-Time Earth & Sky Watch Face

Turn your Garmin smartwatch into an interactive planetarium! 
This watch face features two real-time astronomical views, one focused on planet Earth and one focued on the sky above you.
It provides dynamic orbital mechanics, detailed vector maps, celestial event tracking, and useful sensor complications.

No companion app or phone connection is required: you can use it completely offline.
You can download and use it for free. If you enjoy it, you can support me for more free apps by offering a coffee via PayPal at: paypal.me/lluca14.

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INTERACTIVE DUAL-MODE LAYOUT
Tap and hold the display (1 second) to seamlessly switch between Earth Mode and Sky Mode.

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1. EARTH MODE (Orbital Earth-Moon-Sun Model)
• Real-Time Rotating Polar Earth: High-precision polar projection globe rotating dynamically with Earth's real-time rotation.
• Seasonal Axial Tilt: Simulates Earth's seasonal tilt relative to the Sun, shifting dynamically throughout the year.
• High-Detail Vector Geography: Renders major rivers (Amazon, Nile, Yangtze, ...), mountain ranges (Himalayas, Andes, Rockies, Alps, ...), deserts (Sahara, Gobi, ...), inland seas/lakes, and some major world cities.
• Latitude & Longitude Grid: Scientific coordinate overlay complementing the orbital display.
• Dynamic Sun & Horizon: Sun position updates continuously, shrinking near twilight and setting below the horizon.
• Tidally Locked Orbiting Moon: The Moon orbits in real time based on its exact synodic age. Features detailed lunar seas that rotate with the Moon's orbital angle, keeping the same face toward Earth.
• Live Astro-Event Detection & Glow Effects:
  - Full Moon: Soft golden aura around the lunar disk.
  - New Moon: Ethereal silver-blue ring glow.
  - Supermoon: Amplified golden halo near perigee.
  - Blood Moon (Lunar Eclipse): Deep crimson lunar shadow.
  - Solar Eclipse: Eclipsed lunar disk surrounded by a bright white-gold corona.
  - Lunar Nodes: Ascending (gold) and descending (steel blue) ecliptic crossing indicators.

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2. SKY MODE (Horizon Star Map)
• Zenith-Centered Sky Map: High-precision zenith star chart updating in real time as the Earth rotates.
• True Intuitive Orientation: Face North and look up—what you see in the sky matches your watch screen (North down, South up).
• Major Constellations & Stars: Displays the brightest stars and major constellations visible from your hemisphere.
• Off-Screen Moon Tracker: Directional pointer indicating the Moon's location before moonrise so you always know where it will appear.

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3. SENSOR COMPLICATIONS & BEZEL INDICATORS
• Date: Day of week, day of month, and month.
• Battery Monitor: Displays battery % and remaining days.
• Fitness Tracker: Step count & estimated distance.
• Altimeter: Live altitude reading (m / ft based on watch settings).
• Barometer: Live air pressure (hPa / mbar).
• Solar Times: Location-accurate Sunrise and Sunset times.

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4. OTHER FEATURES
• Automatic Location: Reads latest GPS coordinates from sensor history. (Update easily by starting an outdoor activity for a few seconds).
• Low-Power Mode: Optimized for both MIP and AMOLED screens.