Iwaki時間からSingapore時間への変換
13:26:48
-1
12:26:48
+1
+1
+0
+0
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-1
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-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
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-1
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-1
-1
-1
-1
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-12
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-12