Conversione dell'ora da Hennenman a Tsévié
21:37:42
-2
19:37:42
+7
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+6
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+2
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+1
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+0
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-1
-1
-1
-1
-1
-1
-2
-5
-5
-5
-6
-6
-6
-7
-7
-8
-9