Welcome to the Astronomical Time Calculator! This tool is designed to help researchers perform a variety of precise time-related calculations essential for astronomical observations.

Available Calculations

• Julian Date (JD)
• Heliocentric Julian Date (HJD)
• Barycentric Julian Date (BJD)
• Sidereal Time
• Rise and Set Times
• Sun Rise and Set Time
• Moon Rise and Set Time
• Twilight
• Visibility
• Transit