Bonga時間からKinshasa時間への変換
12:18:14
-2
10:18:14
+6
+6
+6
+6
+6
+5
+5
+5
+5
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+2
+2
+1.5
+1
+0.5
+0
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+0
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+0
+0
-1
-1
-1
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-2
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-2
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-3
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-3
-6
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-11