United States
Japan
Seattle to Osaka Time Difference
Osaka is 16 hours ahead of Seattle
Seattle vs Osaka — At a Glance
Seattle to Osaka — Hour-by-Hour
About Seattle and Osaka
Seattle (population: 0.74M) is known for Amazon, Microsoft, Boeing, coffee culture, and the Pacific Northwest. Osaka (population: 2.7M) is known for street food capital of Japan, Osaka Castle, and the 2025 World Expo host.
Business Hours Overlap
The 16-hour gap means Seattle and Osaka have almost no standard-hours overlap. Early morning calls from Seattle or late evening calls from Osaka are the most practical options.
Calling Between Cities
With 16 hours between Seattle (+1) and Osaka (+81), finding a mutually convenient calling time is tricky. Consider scheduling calls in advance rather than calling spontaneously.
Currency
Seattle uses USD while Osaka uses JPY. Check current exchange rates before making payments or transferring funds between the two cities.
Language
Seattle primarily speaks English, while Osaka speaks Japanese. For business communication, English is commonly used as a bridge language in international settings.
Use our world clock tool to compare Seattle and Osaka visually, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between Seattle and Osaka?
Osaka, Japan is 16 hours ahead of Seattle, United States. Seattle is in the America/Los Angeles timezone (UTC-7) and Osaka is in the Asia/Tokyo timezone (UTC+9).
When it's noon in Seattle, what time is it in Osaka?
When it's 12:00 PM (noon) in Seattle, it's 4:00 AM in Osaka.
What is the best time to call Osaka from Seattle?
The best time to call Osaka from Seattle is during the overlapping business hours. When it's 9 AM in Seattle, it's 1:00 AM in Osaka. Aim for late morning to early afternoon in Seattle for the best chance of reaching someone during working hours.
What currency does Osaka use?
Osaka, Japan uses JPY. Seattle uses USD. You will need to check the current exchange rate for transactions between the two.
What language is spoken in Osaka?
The primary language in Osaka is Japanese. English is widely used for international business communication.
How do I dial Osaka from Seattle?
To call Osaka from Seattle, dial your international access code followed by +81 and the local number. Seattle uses country code +1 and Osaka uses +81.
