Conversion de l'heure de Korsholm à l'heure de Mexico City
20:31:01
-8
12:31:01
+7
+7
+7
+7
+7
+6
+6
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+2
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+1
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-1
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-1
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-5
-5
-5
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-6
-7
-7
-7
-8
-10