5.0 out of 5 — 495278 votes

Yen Bai, Vietnam

Yen Bai keeps Indochina Time at UTC+7 throughout the year. It is a historic provincial area now within Lao Cai province, and its cities, valleys, and mountain communities all use Vietnam’s single national clock.

Yen Bai, Vietnam

Friday, 4 September 2026

UTC+7 · Asia/Ho_Chi_Minh

Time and sun data for Yen Bai — the largest city of Yen Bai

The sun in Yen Bai

Sunrise 05:46 Solar noon 12:01 Sunset 18:16 Daylight 12 h 31 min Night 11 h 29 min Civil twilight 05:23 – 18:39

Vietnam · 1 180 cities · page 1 of 6

Largest cities

All cities — page 1

Current time in Yen Bai, Vietnam

The clock in Yen Bai is seven hours ahead of Coordinated Universal Time. Vietnam does not observe daylight saving time, so the regional offset is constant. Yen Bai city shares its time with Lao Cai city, Hanoi, and southern Vietnam.

For domestic calls and journeys, no time conversion is required anywhere in the country. For an international event, remember that the difference can vary because of clock changes abroad. Converting both places through UTC avoids relying on a seasonal difference that may no longer apply.

Local time zone: Indochina Time UTC relationship: UTC+7 Clock changes during the year: none Difference from Lao Cai city: none Mountain roads can make a short distance feel long, but they cannot create a second time zone.

Yen Bai’s regional setting and urban places

Yen Bai lies in northern Vietnam, where river valleys meet increasingly mountainous terrain. The former province was merged with the former Lao Cai province, and the combined province carries the Lao Cai name. Yen Bai city serves as the political and administrative center of the enlarged province.

Yen Bai city is the principal urban center in the historic Yen Bai area. Nghia Lo is another important town and a gateway to the western valleys and uplands. Other widely recognized localities include Mu Cang Chai, Luc Yen, Van Chan, and Tran Yen. These places differ in size and administrative character, so they should not all be treated as equivalent cities.

The regional label is especially useful when discussing travel routes, landscapes, or older administrative records. Current forms may instead request Lao Cai as the province. Whichever geographic label appears, the whole area remains on UTC+7.

Sunrise among valleys and mountains

Published sunrise times are calculated from geographic coordinates and the date. In a mountainous region, the Sun may be above the astronomical horizon before it clears a nearby ridge. A valley settlement can therefore remain shaded after the listed sunrise, while an exposed slope receives direct light earlier.

Seasonal changes alter both the time and direction of sunrise. Differences between nearby places are usually small on the clock, but terrain makes their practical experience of morning light less uniform. Travellers heading to viewpoints should distinguish astronomical sunrise, civil dawn, and the moment direct sunlight reaches the chosen location.

Look up the nearest town or the coordinates of the viewpoint. Use the local date in UTC+7. Check the terrain east of the observation point. Allow extra time for mist, cloud, and mountain travel. A precise daily solar listing is more useful than a fixed regional estimate. This matters for hiking, photography, transport, and any plan that depends on usable daylight rather than merely the displayed hour.

Questions and answers
Does Yen Bai change its clocks seasonally?
No. It remains on UTC+7 throughout the year.
Is Yen Bai still a province?
The former Yen Bai province is now part of the enlarged Lao Cai province, while Yen Bai remains an important regional and place name.
Why might the Sun appear after the published sunrise?
Mountains, hills, buildings, cloud, or mist can block direct sunlight after the calculated horizon crossing.

Related tools and information

All pages