Konwersja czasu Petrich do czasu Tai’an
15:25:18
+6
21:25:18
+7
+7
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+2
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-1
-1
-1
-1
-1
-1
-1
-2
-2
-5
-5
-5
-5
-6
-7
-7
-7
-8
-10