Chuyển đổi thời gian từ West Island sang giờ Anak
15:31:22
+2.5
18:01:22
+3.5
+3.5
+2.5
+2.5
+2.5
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+0.5
+0.5
+0.5
+0
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-2
-3