The Sun rises at 06:51 and sets at 15:46. 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 Koshimizu, the golden hour starts at 06:30 and ends at 07:38 in the morning and then again at 14:59 in the evening, ending at 16:07.

Civil twilight is the first and last phase of twilight. In the morning, civil dawn begins at 06:18, marking the time when there's enough light for most outdoor activities. In the evening, civil dusk happens at 16:19, right after sunset at 15:46.

Nautical twilight is the period when the Sun is 6-12 degrees below the horizon, commonly used by sailors to navigate at sea. In Koshimizu, nautical dawn starts at 05:41 and nautical dusk occurs at 16:56.

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 Koshimizu starts at 05:06, while astronomical dusk ends at 17:31.

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