Marka 시간을 Bắc Kạn 시간으로 변환
17:17:27
+4
21:17:27
+7
+7
+6
+6
+6
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+0
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-1
-1
-1
-1
-2
-2
-2
-2
-2
-2
-3
-6
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-10