Chato時間からLos Angeles時間への変換
23:21:31
-11
12:21:31
+6
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+5
+5
+5
+5
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+2
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+1
+0.5
+0
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-1
-1
-1
-1
-2
-2
-2
-2
-2
-2
-2
-3
-3
-6
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-11