Time difference
Adelaide to Houston Time Difference
Houston is 15 hours and 30 minutes behind Adelaide — when it's 12:00 PM in Adelaide, it's 8:30 PM the previous day in Houston. (Adelaide (Australia/Adelaide, ACDT); Houston (America/Chicago, CDT).) Below: live local times, the best hours for a call, a full conversion table, and exact daylight-saving dates.
Houston is 15 hours and 30 minutes behind Adelaide. Standard 9 AM–5 PM business hours in Adelaide and Houston do not overlap, so a live call needs one side outside normal hours. Clocks change on November 1, 2026, which briefly shifts the gap between Adelaide and Houston — the converter on this page always reflects the correct offset for the date you pick.
- When it's 9:00 AM in Adelaide, it's 5:30 PM the previous day in Houston.
- When it's 9:00 AM in Houston, it's 12:30 AM the next day in Adelaide.
Houston is currently 15 hours and 30 minutes behind Adelaide.
Interactive converter
12:00PM
Select both cities to see the converted time.
Best times to meet
Standard 9 AM – 5 PM hours in Adelaide and Houston do not overlap. The least-bad options are an early start in one city or a late evening call in the other — for example a 7–8 AM meeting in Adelaide, or a 6–8 PM meeting in Houston.
Quick conversion table
| Adelaide | Houston |
|---|---|
| 12 AM | 8:30 AM (prev day) |
| 1 AM | 9:30 AM (prev day) |
| 2 AM | 10:30 AM (prev day) |
| 3 AM | 11:30 AM (prev day) |
| 4 AM | 12:30 PM (prev day) |
| 5 AM | 1:30 PM (prev day) |
| 6 AM | 2:30 PM (prev day) |
| 7 AM | 3:30 PM (prev day) |
| 8 AM | 4:30 PM (prev day) |
| 9 AM | 5:30 PM (prev day) |
| 10 AM | 6:30 PM (prev day) |
| 11 AM | 7:30 PM (prev day) |
| 12 PM | 8:30 PM (prev day) |
| 1 PM | 9:30 PM (prev day) |
| 2 PM | 10:30 PM (prev day) |
| 3 PM | 11:30 PM (prev day) |
| 4 PM | 12:30 AM |
| 5 PM | 1:30 AM |
| 6 PM | 2:30 AM |
| 7 PM | 3:30 AM |
| 8 PM | 4:30 AM |
| 9 PM | 5:30 AM |
| 10 PM | 6:30 AM |
| 11 PM | 7:30 AM |
Daylight saving
On November 1, 2026, Houston shifts for daylight saving. After that, Houston will be 16 hours and 30 minutes behind Adelaide (currently 15 hours and 30 minutes behind Adelaide). The converter and the tables above always reflect the correct offset for the date you pick.
- Adelaide is currently observing daylight saving time.
- Houston is currently observing daylight saving time.
Frequently asked questions
- Is Houston ahead of or behind Adelaide?
- Houston is 15 hours and 30 minutes behind Adelaide.
- How many hours behind Adelaide is Houston?
- Houston is 15 hours and 30 minutes behind Adelaide.
- What time is 9 AM in Adelaide in Houston?
- 9:00 AM in Adelaide is 5:30 PM the previous day in Houston.
- What time is noon in Adelaide in Houston?
- 12:00 PM in Adelaide is 8:30 PM the previous day in Houston.
- What time is 5 PM in Adelaide in Houston?
- 5:00 PM in Adelaide is 1:30 AM in Houston. Useful for end-of-day handoffs between the two offices.
- What time is 3 PM in Adelaide in Houston?
- 3:00 PM in Adelaide is 11:30 PM the previous day in Houston.
- Is Adelaide currently observing daylight saving time?
- Adelaide is currently observing daylight saving time (summer time).
- Is Houston currently observing daylight saving time?
- Houston is currently observing daylight saving time (summer time).
- Do Adelaide and Houston observe daylight saving?
- On November 1, 2026, Houston shifts for daylight saving. After that, Houston will be 16 hours and 30 minutes behind Adelaide (currently 15 hours and 30 minutes behind Adelaide). The converter and the tables above always reflect the correct offset for the date you pick.
- When is the best time to call Houston from Adelaide?
- Adelaide and Houston business hours don't overlap. The closest options are early mornings in Adelaide or late evenings, when one side stretches outside 9–5.
- When is the best time to call Adelaide from Houston?
- Houston and Adelaide business hours don't overlap. The closest options are early mornings in Houston or late evenings, when one side stretches outside 9–5.
- Adelaide (ACDT) to Houston (CDT) — how do I convert quickly?
- Subtract 15 hours and 30 minutes from Adelaide local time to get Houston local time. Or use the converter at the top of this page — it stays accurate through daylight-saving changes automatically.
Other conversions
- Adelaide to New York
- Adelaide to London
- Adelaide to Tokyo
- Adelaide to Dubai
- Adelaide to Singapore
- Adelaide to Los Angeles
- Adelaide to Sydney
- Adelaide to Paris
- Adelaide to Mumbai
- Adelaide to Hong Kong