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Xaisomboun, Laos

Xaisomboun keeps Indochina Time, UTC+7, all year. Every district in the province uses the same time, and there is no daylight-saving clock change.

Ban Vangluang, Laos

Saturday, 5 September 2026

UTC+7 · Asia/Vientiane

Time and sun data for Ban Vangluang — the largest city of Xaisomboun

The sun in Ban Vangluang

Sunrise 5:55 AM Solar noon 12:08 PM Sunset 6:21 PM Daylight 12 h 26 min Night 11 h 34 min Civil twilight 5:33 AM – 6:43 PM

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Current time in Xaisomboun, Laos

Seven hours must be added to UTC to obtain the local time in Xaisomboun. When this crosses midnight, the province is already on the next calendar day. The permanent offset is useful for recurring plans tied to UTC. The time difference from a foreign city can nevertheless change if that city observes daylight saving, since only the foreign clock moves.

Xaisomboun’s landscape supplies plenty of elevation; its time zone supplies none of the usual seasonal ups and downs.

Administrative centre and settlements

Anouvong is the provincial capital. Long Tieng is another notable settlement, while Longchaeng, Hom and Thathom are names associated with district centres or districts within Xaisomboun. The province contains comparatively small, dispersed communities, and ordinary place databases may differ in how they classify a town, village or district seat. It is therefore more accurate to identify key centres than to promise a rigid ranking of the “largest cities.”

Anouvong: the administrative capital of Xaisomboun. Long Tieng: a historically notable settlement in the province. Longchaeng: a district centre whose spelling may vary by source. Hom and Thathom: other district areas following UTC+7.

Alternative romanisations can make the same place look different across maps. Confirm the map position when using a settlement name for navigation or solar calculations; the time-zone result will remain the same throughout the province.

How terrain affects perceived sunrise

Sunrise in Xaisomboun varies through the year, and calculations must be tied to a date. Coordinates matter too: a result for Anouvong is a practical guide for the capital, not an exact answer for every settlement.

The mountainous setting can delay direct sunlight behind an eastern ridge. Astronomical sunrise is calculated with a standard model of the horizon and atmosphere, whereas visible sunrise describes an observer’s actual view. The two moments need not coincide in a valley.

Use exact coordinates when planning an observation from a particular slope or viewpoint. For general travel, the nearest settlement is an adequate reference. Civil twilight may be more useful than sunrise when the real question is when enough natural light becomes available.

Questions and answers

What UTC offset does Xaisomboun use?
Xaisomboun uses UTC+7.
Is Anouvong in a different time zone from Long Tieng?
No. Both follow the same official Lao time.
Why might direct sunlight arrive late in a valley?
A surrounding ridge can obstruct the sun after the calculated astronomical sunrise.
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