The Sun rises at 06:35 and sets at 17:32. 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 Lạng Sơn, the golden hour starts at 06:20 and ends at 07:07 in the morning and then again at 16:59 in the evening, ending at 17:46.

Civil twilight is the first and last phase of twilight. In the morning, civil dawn begins at 06:11, marking the time when there's enough light for most outdoor activities. In the evening, civil dusk happens at 17:55, right after sunset at 17:32.

Nautical twilight is the period when the Sun is 6-12 degrees below the horizon, commonly used by sailors to navigate at sea. In Lạng Sơn, nautical dawn starts at 05:43 and nautical dusk occurs at 18:23.

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 Lạng Sơn starts at 05:16, while astronomical dusk ends at 18:50.

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