Civil Twilight
Civil twilight happens when the Sun is less than 6 degrees below the horizon. It is the brightest twilight phase and the most familiar one to everyday outdoor activity.
Astronomical Twilight Calculator
See when civil, nautical, and astronomical twilight happen for your location, then jump to the full city page for sunrise, sunset, moon phase, and day-length details.
Loading local twilight data
We are checking your location to calculate today's twilight phases.
Nautical Twilight
Nautical twilight begins once the Sun is 6 to 12 degrees below the horizon. The horizon is still faintly visible while brighter stars and planets become easier to use for orientation.
Astronomical Twilight
Astronomical twilight covers the range from 12 to 18 degrees below the horizon. This is the phase astronomers watch closely because true night begins after astronomical dusk.
Related Sunset and Sky Tools
Explore related pages that support sunset watching, twilight planning, sky photography, and astronomy-focused searches.
Golden Hour
Check the warm light window before sunset and after sunrise.
Blue Hour
Find cooler twilight color windows for cityscapes and landscapes.
Moonrise & Moonset
Track lunar rise and set times together with sunset context.
Moon Phase Today
Check today’s moon phase for viewing and photography planning.