Konwersja czasu Batifa do czasu Cát Bà
19:59:53
+4
23:59:53
+7
+7
+6
+6
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-1
-1
-1
-1
-2
-2
-2
-2
-2
-2
-3
-6
-6
-6
-7
-7
-7
-8
-8
-9
-10