GST to JST
Convert Gulf Standard Time (GST) to Japan Standard Time (JST), live. JST is normally 5 hours ahead of GST. Pick any time below, or open the full world clock map.
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GST vs JST
GST (Gulf Standard Time) runs at UTC+4 and JST (Japan Standard Time) at UTC+9. JST is normally 5 hours ahead of GST.
GST stays at UTC+4 all year round — it does not observe daylight saving time. JST stays at UTC+9 all year round — it does not observe daylight saving time.
Looking for the reverse conversion? See JST to GST. You can also browse every offset on the interactive time zone map or line up several zones at once with the meeting planner.