A
+29 Attapeu
+29
B
+24 Bokeo Province
+24
+30 Bolikhamsai Province
+30
C
+25 Champasak Province
+25
H
+23 Houaphanh Province
+23
K
+23 Khammouane Province
+23
L
+24 Luang Namtha
+24
+26 Luang Phrabang
+26
O
+28 Oudomxay Province
+28
P
+21 Phongsaly
+21
S
+25 Sainyabuli
+25
+29 Salavan
+29
S
+25 Savannakhet
+25
+24 Sekong
+24
V
+30 Vientiane (airport)
+30
+29 Vientiane Province
+29
X
+22 Xiangkhouang Province
+22