Bangkok is currently 3 hours behind Sydney. Convert time between Bangkok and Sydney, see the exact difference, and find the best hours for calls and meetings.
Bangkok uses Indochina Time. Sydney uses Australian Eastern Standard Time. Bangkok time is 3 hours behind Sydney. So, when it is 12:00 AM in Bangkok, it is 3:00 AM in Sydney.
Common Bangkok times and their Sydney equivalents.
| Bangkok Time | Sydney Time |
|---|---|
| 12:00 AM Bangkok | 3:00 AM Sydney |
| 1:00 AM Bangkok | 4:00 AM Sydney |
| 2:00 AM Bangkok | 5:00 AM Sydney |
| 3:00 AM Bangkok | 6:00 AM Sydney |
| 4:00 AM Bangkok | 7:00 AM Sydney |
| 5:00 AM Bangkok | 8:00 AM Sydney |
| 6:00 AM Bangkok | 9:00 AM Sydney |
| 7:00 AM Bangkok | 10:00 AM Sydney |
| 8:00 AM Bangkok | 11:00 AM Sydney |
| 9:00 AM Bangkok | 12:00 PM Sydney |
| 10:00 AM Bangkok | 1:00 PM Sydney |
| 11:00 AM Bangkok | 2:00 PM Sydney |
| 12:00 PM Bangkok | 3:00 PM Sydney |
| 1:00 PM Bangkok | 4:00 PM Sydney |
| 2:00 PM Bangkok | 5:00 PM Sydney |
| 3:00 PM Bangkok | 6:00 PM Sydney |
| 4:00 PM Bangkok | 7:00 PM Sydney |
| 5:00 PM Bangkok | 8:00 PM Sydney |
| 6:00 PM Bangkok | 9:00 PM Sydney |
| 7:00 PM Bangkok | 10:00 PM Sydney |
| 8:00 PM Bangkok | 11:00 PM Sydney |
| 9:00 PM Bangkok | 12:00 AM Sydney |
| 10:00 PM Bangkok | 1:00 AM Sydney |
| 11:00 PM Bangkok | 2:00 AM Sydney |
Bangkok uses Indochina Time (ICT, UTC+7) year-round with no Daylight Saving Time. The fixed UTC+7 offset is shared with Hanoi, Ho Chi Minh City, and Jakarta. Thailand's near-equatorial position makes seasonal time adjustment unnecessary.
Sydney uses Australian Eastern Standard Time (AEST, UTC+10) in winter and Australian Eastern Daylight Time (AEDT, UTC+11) in summer. Because Australia is in the Southern Hemisphere, its summer runs October–April — the opposite of the Northern Hemisphere. Clocks go forward on the first Sunday of October and back on the first Sunday of April.
Both Bangkok and Sydney may observe Daylight Saving Time, which means the offset between them can change twice a year. Here is what to expect each season.
| Period | Note | Bangkok | Sydney | Offset |
|---|---|---|---|---|
| Nov – Mar | Both on standard time | GMT+7 (UTC+7) | GMT+11 (UTC+11) | 4 hours |
| Mar – late Mar | US clocks forward, some zones still on standard | GMT+7 (UTC+7) | GMT+11 (UTC+11) | 4 hours |
| Late Mar – Oct current | Both on summer / daylight time | GMT+7 (UTC+7) | GMT+10 (UTC+10) | 3 hours |
| Late Oct – early Nov | Clocks transitioning — check exact date | GMT+7 (UTC+7) | GMT+11 (UTC+11) | 4 hours |
The transition window typically lasts 1–2 weeks in spring and autumn. If you have a recurring weekly meeting near a clock change, verify the exact date to avoid a missed call.
Bangkok is currently 3 hours behind Sydney. Bangkok uses Indochina Time (UTC+7) and Sydney uses Australian Eastern Standard Time (UTC+10).
The best overlap window is 9:00 am–3:00 pm Bangkok time, which corresponds to 12:00 pm–6:00 pm Sydney time. Both cities are within standard business hours (9 am–6 pm) during this window.
When it is 9:00 AM in Bangkok, it is 12:00 pm in Sydney. Bangkok is 3 hours behind Sydney.
When it is 5:00 PM in Sydney, it is 2:00 pm in Bangkok.
Sydney observes Daylight Saving Time but Bangkok does not. This means the offset between the two cities changes by one hour when Sydney transitions its clocks. Always verify the current offset when scheduling meetings near DST transition dates.