P’ot’i time to Yŏnmu time conversion
16:39:10
+5
21:39:10
+6
+6
+5
+5
+5
+5
+5
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+4
+3
+3
+3
+2.5
+2
+2
+2
+2
+1.5
+1.5
+1.5
+1.5
+1.5
+1.5
+1.5
+1.5
+1.5
+1.5
+1
+1
+0.5
+0
-1
-1
-1
-1
-1
-1
-1
-2
-2
-2
-2
-2
-2
-3
-3
-3
-3
-3
-3
-4
-7
-7
-7
-8
-8
-8
-9
-9
-10
-11