SkyChrono

SkyChrono is a real-time astronomical dashboard for anyone who plans around the sky—astronomers, astrophotographers, navigators, and curious stargazers.

SUN
• Live altitude & azimuth
• Sunrise, sunset, and solar noon
• Civil / nautical / astronomical twilight
• Current lighting state (day, twilight, night) + day length

MOON
• Current phase with illumination %
• Moonrise & moonset
• Live altitude & azimuth
• Phase progression at a glance

TIME SYSTEMS
• Local time + timezone
• UTC
• Julian Date (JD) / Modified Julian Date (MJD)
• Greenwich Mean Sidereal Time (GMST)
• Local Sidereal Time (LST)

LOCATION
• Automatic GPS position (optional)
• Manual coordinates anywhere on Earth
• Decimal degrees or DMS input

ALERTS & NIGHT MODE
• Notifications for sunrise/sunset, twilight boundaries, golden hour, and major moon phases
• Night Vision mode (red theme) to preserve dark adaptation

EXPORT & LEARN
• Save the dashboard as a high-resolution image
• Export data as JSON, or copy any value with a tap
• Built-in explanations for key astronomy concepts

PRIVACY FIRST
• No ads, no subscriptions
• No tracking—your location stays on device
• Manual location mode for complete control

SkyChrono helps you pick the right moment—whether you’re planning a shoot, observing, or learning celestial mechanics.