The Sun rises at 04:14 and sets at 22:40. 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 Otaniemi, the golden hour starts at 03:27 and ends at 05:30 in the morning and then again at 21:23 in the evening, ending at 23:27.

Civil twilight is the first and last phase of twilight. In the morning, civil dawn begins at 02:45, marking the time when there's enough light for most outdoor activities. In the evening, civil dusk happens at 00:08, right after sunset at 22:40.

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

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 Otaniemi starts at -, while astronomical dusk ends at -.

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