Ceres time to Kaifeng time conversion
13:23:15
+6
19:23:15
+7
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+4.5
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+3.5
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+3.5
+3
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+2.5
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+1.5
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+0
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-1
-1
-1
-1
-1
-1
-2
-5
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-5
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-9