Qibla · Lạng Sơn Province
Qibla direction in Lang Son
To face the Kaaba in Lang Son, turn to 283.3° measured clockwise from true north, which is west (13.3° north of west). The Sacred Mosque in Mecca lies 6,858 km away along the shortest path over the globe, and this is the direction the mihrabs of the mosques in Lang Son should follow.
Line up the top of your phone or compass with the green needle: it marks 283.3°, the Qibla of Lang Son. Phone compasses usually display true north, so a reading of 283° is all you need; a needle compass reads magnetic north and needs the local declination added or subtracted first.
Find the Qibla with your phone
How to face the Qibla in Lang Son
Stand where you will pray and find north first. Then turn towards west and move a further 13.3° towards north: the result is the bearing of 283.3°. A small error of a few degrees is forgiven by most scholars, but aiming simply at west would leave you about 13° off.
Facing the Qibla is a condition of the prayer. Whoever prays inside the Sacred Mosque faces the Kaaba itself; whoever is far away, as in Lang Son, faces its direction and makes a sincere effort to be accurate. A nearby mosque is a handy reference, because its prayer rows were aligned when it was built. Once you know the direction at home, a discreet mark on the wall saves you from checking again.
Why a flat map shows a different direction
A straight line drawn on a flat (Mercator) map from Lang Son to Mecca points to 269.6° (west), 13.7° away from the correct 283.3°. That map line is a rhumb line: it keeps the same compass heading all the way, but it is 60 km longer than the true shortest route. The Qibla follows the great circle, the shortest path on the curved Earth, which is why the bearing differs.
How is the figure of 283.3° obtained? From the coordinates of Lang Son (21.8526° N, 106.7610° E) and of the Kaaba (21.4225° N, 39.8262° E), spherical trigonometry gives the starting bearing of the great circle joining them. Mosque architects and astronomical Qibla tables rely on exactly the same calculation.
Distance from Lang Son to Mecca and Medina
Mecca is 6,858 km from Lang Son as the crow flies, and Medina, the city of the Prophet ﷺ, is 6,802 km away. A direct flight would take roughly 8 h 34 min, although most pilgrims from Lang Son connect through Jeddah or Medina airport.
Clocks in Lang Son run 4 hours ahead of Mecca all year. Prayer times, however, depend on the sun at your own location, so always use the prayer times of Lang Son rather than those of Mecca.
Finding the Qibla with the sun in Lang Son
On 112 days of 2027, the sun passes exactly through the Qibla direction of Lang Son while it is well above the horizon. At that moment, facing the sun means facing Mecca. The effect is most frequent in May (31 days); for example, on 1 May 2027 it happens at 17:42 local time.
On 200 days the sun stands exactly opposite the Qibla: then the shadow of any vertical object, a pole, a door frame or a plumb line, points straight towards Mecca. This is most frequent in March (31 days), for instance on 1 March 2027 at 07:09.
| Date | Sun in the Qibla direction (face the sun) | Sun opposite (shadows point to the Qibla) |
|---|---|---|
| 1 January 2027 | — | — |
| 15 January 2027 | — | — |
| 1 February 2027 | — | — |
| 15 February 2027 | — | — |
| 1 March 2027 | — | 07:09 |
| 15 March 2027 | — | 07:53 |
| 1 April 2027 | — | 08:44 |
| 15 April 2027 | — | 09:27 |
| 1 May 2027 | 17:42 | 10:17 |
| 15 May 2027 | 16:56 | 11:02 |
| 1 June 2027 | 11:54 | — |
| 15 June 2027 | 12:23 | — |
| 1 July 2027 | 12:22 | — |
| 15 July 2027 | 16:25 | 11:54 |
| 1 August 2027 | 17:17 | 11:03 |
| 15 August 2027 | 18:01 | 10:16 |
| 1 September 2027 | — | 09:16 |
| 15 September 2027 | — | 08:25 |
| 1 October 2027 | — | 07:27 |
| 15 October 2027 | — | 06:37 |
| 1 November 2027 | — | — |
| 15 November 2027 | — | — |
| 1 December 2027 | — | — |
| 15 December 2027 | — | — |
Twice a year the sun passes directly over the Kaaba, on 28 May 2027 and 16 July 2027. Both moments are in daylight in Lang Son: at 16:18 and 16:27 local time, face the sun and you face the Qibla exactly, anywhere in the city.
Lang Son compared with other cities
The Qibla here is practically the same as in Hanoi (283.6°), and Mecca is 71 km farther away. The nearest city with its own Qibla page, Chũ (57 km), prays towards 283.6°, a difference of 0.2°.
Across the 98 cities in Vietnam on this site, the Qibla ranges from 282.3° in Lao Cai to 289.4° in Ca Mau, a spread of 7.2°. That is too large to use one national direction, so each city has its own bearing.
See all cities on the Qibla page for Vietnam.
Qibla in cities near Lang Son
- Chũ283.6° · 57 km
- Bắc Giang283.5° · 87 km
- Thị Trấn Đông Triều283.7° · 89 km
- Thai Nguyen283.3° · 99 km
- Phổ Yên283.4° · 102 km
- Bac Ninh283.5° · 103 km
Qibla in Lang Son: questions and answers
What is the Qibla direction in Lang Son?
It is 283.3° from true north, which is west: 13.3° north of west.
How far is Lang Son from Mecca?
6,858 km in a straight line over the globe, and 6,802 km to Medina.
When does the sun show the Qibla in Lang Son?
On 112 days of 2027 the sun stands in the Qibla direction; the table on this page gives the exact time for the 1st and 15th of each month.
Why is the Qibla in Lang Son not the direction shown on a map?
Flat maps distort directions. The line on a map points to 269.6°, but the shortest route on the globe leaves Lang Son at 283.3°, and that is the Qibla.
Does the Qibla change during the year?
No. The direction of 283.3° is fixed; only the times when the sun lines up with it change from day to day.