Conversão da hora de Yei para a hora de Diffa
20:57:02
-1
19:57:02
+7
+7
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+6
+6
+6
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-1
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-1
-1
-1
-1
-1
-2
-2
-5
-5
-5
-5
-6
-7
-7
-7
-8
-10