The Sun rises at 07:18 and sets at 21:19. These times are essential for planning outdoor activities, photography, or just enjoying nature.

The golden hour is the period of soft, warm light perfect for photography and occurs shortly after sunrise and just before sunset. In Castro-Urdiales, the golden hour starts at 06:59 and ends at 07:57 in the morning and then again at 20:40 in the evening, ending at 21:38.

Civil twilight is the first and last phase of twilight. In the morning, civil dawn begins at 06:47, marking the time when there's enough light for most outdoor activities. In the evening, civil dusk happens at 21:50, right after sunset at 21:19.

Nautical twilight is the period when the Sun is 6-12 degrees below the horizon, commonly used by sailors to navigate at sea. In Castro-Urdiales, nautical dawn starts at 06:09 and nautical dusk occurs at 22:28.

Astronomical twilight occurs when the Sun is 12-18 degrees below the horizon, and the sky is dark enough for astronomers to observe faint celestial objects. Astronomical dawn in Castro-Urdiales starts at 05:27, while astronomical dusk ends at 23:10.

Whether you're looking to enjoy a beautiful sunrise in Castro-Urdiales or planning to photograph during the golden hour or blue hour, it's essential to know these key solar events and their times.