Conversion de l'heure de Opole à l'heure de Mexico City
20:30:46
-8
12:30:46
+7
+7
+7
+7
+7
+6
+6
+6
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+3.5
+3.5
+3
+3
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+2
+1.5
+1
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+1
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-1
-1
-1
-1
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-2
-5
-5
-5
-6
-6
-6
-7
-7
-8
-9