P’yŏngsŏng time to Sunām time conversion
21:09:52
-3.5
17:39:52
+1
+1
+0
+0
+0
+0
+0
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-2
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-2
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-5
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-8
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-8
-8
-9
-12
-12
-12