Moon Phases for Wear OS puts a complete lunar and solar companion on your wrist. See the Moon’s current phase, illumination, distance, size, and sky position at your location. Get rich solar details, live space weather highlights (DONKI), upcoming eclipses and meteor showers, plus a 3‑day lunar outlook. Uses NASA SVS imagery online and seamless offline assets otherwise.

Gestures and what you’ll see

Swipe up — Solar details + Space Weather
Sunrise, solar noon, sunset, nadir
Day length and night length
Civil, nautical, astronomical twilight windows
Golden hour and blue hour windows
Equation of time (sundial vs. clock)
Space Weather (NASA DONKI):
Kp index (with quiet/active hints)
Geomagnetic storms (GST) and max Kp
Solar flares (class, most recent peak)
CME highlights and ENLIL Earth impact ETA
High‑speed streams (HSS), SEP, IPS, and recent notices/watches
Moon geometry (CSV zone center): elongation, bright limb angle, zone ID

Swipe down — Lunar details at your location
Phase name and illumination
Age in days (and hours) and cycle progress (%)
Distance and apparent angular size
Azimuth with compass direction and altitude (above/below horizon)
Rise, transit, and set times
Next New, First Quarter, Full, and Last Quarter
Previous/next perigee and apogee
CSV geometry (zone center): elongation, apparent size, midnight altitude/azimuth, libration (lon/lat/tip), bright limb angle

Swipe left — Extras and planning
Tidal influence (spring/neap/intermediate)
Visibility bar (quick glance illumination chart)
Next lunar eclipses (from the offline NASA/GSFC catalog)
Upcoming meteor showers (peak date and ZHR)
Zone and 3‑day CSV forecast: illumination, distance, apparent diameter

Helpful shortcuts

Double‑tap: Toggle a high‑resolution Moon image (zoom/pan). Loads a single JPEG when online; falls back gracefully when offline.
Back/Forward buttons: Jump ±24 hours
Calendar: Pick any date/time and preview the Moon

Designed for Wear OS

Watch‑first UI, large readable text, and gesture navigation
Fast, power‑conscious previews; rich details only when you ask

Online imagery and offline resilience

Uses NASA SVS lunar imagery when available; otherwise switches to high‑quality offline assets that match the lunar cycle
Works anywhere, even without a connection

Sources and attribution

NASA SVS lunar imagery, NASA DONKI, NASA eclipse and meteor resources (public domain)
Zone CSV adds daily lunar geometry for quick planning

Privacy‑friendly

Location is used on‑device to compute sky data
No analytics, no ads, no tracking

Note: NASA content is used respectfully and without endorsement.