East London 시간을 Oklahoma City 시간으로 변환
22:18:11
-7
15:18:11
+7
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+3
+3
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+2
+1.5
+1
+1
+1
+1
+1
+1
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+0
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-1
-1
-1
-1
-1
-1
-2
-5
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