Baynjiwayn時間からSt. Charles時間への変換
19:51:34
-7
12:51:34
+7
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+3
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+2.5
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+2.5
+2.5
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+2
+2
+1.5
+1
+0.5
+0
+0
+0
+0
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+0
-1
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-2
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-6
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