United States
Australia
Houston to Sydney Time Difference
Sydney is 16 hours ahead of Houston
Houston vs Sydney — At a Glance
Houston to Sydney — Hour-by-Hour
About Houston and Sydney
Houston (population: 2.3M) is known for NASA's Johnson Space Center, energy sector capital, and the Texas Medical Center. Sydney (population: 5.3M) is known for the Opera House, Harbour Bridge, Australia's financial center, and surfing culture.
Business Hours Overlap
The 16-hour gap means Houston and Sydney have almost no standard-hours overlap. Early morning calls from Houston or late evening calls from Sydney are the most practical options.
Calling Between Cities
With 16 hours between Houston (+1) and Sydney (+61), finding a mutually convenient calling time is tricky. Consider scheduling calls in advance rather than calling spontaneously.
Currency
Houston uses USD while Sydney uses AUD. Check current exchange rates before making payments or transferring funds between the two cities.
Language
Houston and Sydney share English as a common language, which simplifies business communication.
Use our world clock tool to compare Houston and Sydney visually, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between Houston and Sydney?
Sydney, Australia is 16 hours ahead of Houston, United States. Houston is in the America/Chicago timezone (UTC-5) and Sydney is in the Australia/Sydney timezone (UTC+11).
When it's noon in Houston, what time is it in Sydney?
When it's 12:00 PM (noon) in Houston, it's 4:00 AM in Sydney.
What is the best time to call Sydney from Houston?
The best time to call Sydney from Houston is during the overlapping business hours. When it's 9 AM in Houston, it's 1:00 AM in Sydney. Aim for late morning to early afternoon in Houston for the best chance of reaching someone during working hours.
What currency does Sydney use?
Sydney, Australia uses AUD. Houston uses USD. You will need to check the current exchange rate for transactions between the two.
What language is spoken in Sydney?
The primary language in Sydney is English. Houston also speaks English, making communication easier.
How do I dial Sydney from Houston?
To call Sydney from Houston, dial your international access code followed by +61 and the local number. Houston uses country code +1 and Sydney uses +61.
