Calculate local sidereal time for any location and date. Essential for astronomers to locate celestial objects.
Enter your values below
Your geographic latitude.
Your geographic longitude.
Date and time for calculation (UTC).
How this calculator works
Converts Greenwich Sidereal Time to local sidereal time using the observer's longitude and time of day.
Common questions about this calculator
These calculators are for informational purposes only. While we strive for accuracy, results should not be used as the sole basis for important decisions.
