Stellarium is a free open-source planetarium software that shows a realistic sky in 3D, just like what you see with the naked...
Best MoonCalc Alternatives ranked by AI · updated Aug 2026
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MoonCalc is an interactive lunar calculator for examining the Moon's position, phase, altitude, azimuth, and illumination at a chosen place and time. It is aimed at photographers, travelers, and observers who need precise planning information.
Top 6 MoonCalc alternatives
Moonphase is a web-based lunar calendar showing the current moon phase, upcoming phases, and related lunar dates. It is intended for casual...
Pros
- Provides a focused moon-phase experience without requiring an account
- Useful lunar calendars and phase dates for basic planning
- Works in a standard web browser across desktop and mobile
Cons
- Less detailed than dedicated astronomy software
- Limited sky-object tracking beyond the Moon
- More basic location and rise/set tools than specialist lunar calculators
Star Walk 2 is a popular astronomy app with detailed star maps and augmented reality features.
Pros
- Rich database of celestial objects
- AR mode for interactive stargazing
Cons
- Paid app, not free like Sky Map
4
Sky Tonight
Vito Technology
Sky Tonight is a mobile stargazing guide that identifies stars, planets, constellations, and satellites using an interactive sky map. It is built...
Pros
- Makes identifying objects in the sky easier than the NASA App
- Includes augmented-reality sky viewing, event calendars, and visibility forecasts
- Offers a more focused experience for local stargazing
Cons
- Has substantially less NASA news and mission reporting
- Many advanced features require a purchase or subscription
- Less suitable for following long-running NASA programs
Freemium, paid upgrades
5
Timeanddate
Timeanddate.com AS
Timeanddate provides world clocks, time-zone conversions, calendars, and daylight-saving information. It serves travelers, businesses, researchers, and anyone needing authoritative date and time...
Pros
- More comprehensive time-zone and daylight-saving data than Easy Timezones
- Includes historical, calendar, and astronomical time tools
- Widely used and available without an account
Cons
- More cluttered interface than Easy Timezones
- Less focused on quick team meeting selection
- Advertising can make the experience feel heavier
6
Moongiant
Moongiant
Moongiant is a free lunar information website offering current moon phases, monthly calendars, moonrise and moonset times, and illumination data. It is...
Pros
- Provides more moonrise and moonset context than Moonphase
- Offers monthly calendars useful for quick planning
- Free and accessible without specialist software
Cons
- More advertising and visual clutter than Moonphase
- Fewer full-sky astronomy features than Stellarium or Sky Tonight
- Interface and navigation are less streamlined
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