Calculate the blue hour times for photography. Find the brief period of deep blue light before sunrise and after sunset.
Enter your values below
Your geographic latitude.
Your geographic longitude.
Date to calculate blue hour for.
How this calculator works
Blue hour occurs during civil twilight when the Sun is 4° to 8° below the horizon, producing a deep blue sky.
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.
