Ώρα Hạ Long
07:20:00
Ανατολή ηλίου: 06:10:29 
Η δυση του ηλιου: 17:56:5008:20:00
03:20:00
21:20:00
05:50:00
18:20:00
08:20:00
05:20:00
08:20:00
08:20:00
05:50:00
03:20:00
08:20:00
06:20:00
09:20:00
21:20:00
Διαφορά ώρας μεταξύ Hạ Long και μεγάλων πόλεων
+4
+4
+2
+2
+2
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+0
+0
+0
-1
-1
-1
-1
-2
-2
-3
-4
-4
-4
-4
-4
-4
-4
-5
-5
-5
-5
-6
-6
-6
-6
-6
-6
-7
-7
-7
-10
-10
-10
-10
-11
-12
-12
-12