Conversion de l'heure de Piotrków Trybunalski à l'heure de Hong Kong
15:30:31
+6
21:30:31
+7
+7
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+6
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+3
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+2
+1.5
+1
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-1
-1
-1
-1
-1
-1
-2
-5
-5
-5
-6
-6
-6
-7
-7
-8
-9