Guam Tokyo Time Difference

How many hours ahead is Guam from Tokyo?

Guam is always 1 hour ahead of Tokyo. When it's 9:00 AM in Tokyo, it's 10:00 AM in Guam. Japan uses JST (UTC+9) while Guam uses ChST (UTC+10). Neither observes DST.

Guam is a popular vacation destination for Japanese tourists, with multiple daily flights from Tokyo.

Best Time to Call Tokyo from Guam

Business hours overlap almost completely! 9:00 AM - 6:00 PM Tokyo corresponds to 10:00 AM - 7:00 PM Guam. Tourism and military coordination is easy.

Guam and Tokyo are connected by frequent 3.5-hour flights. United, Japan Airlines, and ANA operate multiple daily services.

Popular Time Zone Comparisons

From Guam

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From Tokyo

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