Konwersja czasu Helmstedt do czasu Hefei
12:20:22
+6
18:20:22
+7
+7
+7
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+6
+6
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+1
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-1
-1
-1
-1
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-2
-5
-5
-5
-5
-6
-6
-7
-7
-8
-9