Conversion de l'heure de Vänersborg à l'heure de Mexico City
23:37:59
-8
15:37:59
+7
+7
+7
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+6
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+3.5
+3.5
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+3.5
+3.5
+3.5
+3
+3
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+2
+1.5
+1
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-1
-1
-1
-1
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-2
-5
-5
-5
-6
-6
-6
-7
-7
-8
-9