Beijing to ACST
+1h 30mBeijing
CSTSOURCEACST
ACSTGreen rows indicate typical business hours (9 AM - 5 PM)
CST and ACST on the World Map
The map below highlights the CST (China Standard Time) and ACST (Australian Central Standard Time) timezone regions across the globe.
CST – China Standard Time
UTC+08:00China Standard Time (CST) covers all of mainland China, 8 hours ahead of UTC.
- •China uses a single time zone despite spanning 5 geographical zones.
- •In Xinjiang (western China), sunset can be as late as midnight in summer.
- •China abolished daylight saving time in 1991.
- •The Shanghai Stock Exchange operates on CST/Beijing Time.
ACST – Australian Central Standard Time
UTC+09:30Australian Central Standard Time (ACST, UTC+09:30) covers South Australia and the Northern Territory, on a half-hour offset.
- •ACST uses a half-hour offset: UTC+09:30.
- •South Australia moves to ACDT (UTC+10:30) in summer; the Northern Territory does not.
- •Adelaide and Darwin are 30 minutes apart during daylight saving, level in winter.
- •Adelaide is one of the few major cities on a 30-minute offset.
Beijing to ACST Time Difference – Complete Guide
Beijing runs on China Standard Time (CST) at UTC+08:00. ACST runs on Australian Central Standard Time (ACST) at UTC+09:30. That puts Beijing 1 hour 30 minutes ahead of ACST — a difference of +1h 30m at the current offsets.
In practice, when it is 9:00 AM in Beijing it is 10:30 AM in ACST. Midnight in Beijing is 1:30 AM in ACST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Beijing to ACST time conversion table
| Beijing (CST) | ACST (ACST) | Day |
|---|---|---|
| 12:00 AM | 1:30 AM | same day |
| 6:00 AM | 7:30 AM | same day |
| 7:00 AM | 8:30 AM | same day |
| 8:00 AM | 9:30 AM | same day |
| 9:00 AM | 10:30 AM | same day |
| 12:00 PM | 1:30 PM | same day |
| 3:00 PM | 4:30 PM | same day |
| 5:00 PM | 6:30 PM | same day |
| 6:00 PM | 7:30 PM | same day |
| 9:00 PM | 10:30 PM | same day |
Why people convert Beijing to ACST time
- Scheduling a call from Beijing to ACST: a 10:00 AM start in Beijing lands at 11:30 AM in ACST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Beijing and ACST are inside the 9-to-5 working day between 9:00 AM and 3:30 PM CST time (10:30 AM–5:00 PM ACST). That is roughly 6 hours 30 minutes of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in Beijing is 9:30 PM in ACST makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM CST" is unambiguous; "3 PM" across a +1h 30m gap is not.
- Block 9:00 AM–3:30 PM CST as the recurring meeting window if you work primarily from Beijing and need ACST colleagues present.
About CST (China Standard Time)
China Standard Time (CST, also known as Beijing Time) is used across all of mainland China despite the country spanning five geographical time zones. This single-timezone policy was adopted in 1949. China does not observe daylight saving time. CST is shared with Hong Kong (HKT), Macau, Taiwan, Singapore, Malaysia, and the Philippines, making UTC+08:00 one of the most used offsets in the world.
About ACST (Australian Central Standard Time)
Australian Central Standard Time (ACST) is the half-hour offset of UTC+09:30 used across South Australia and the Northern Territory, taking in Adelaide and Darwin. South Australia moves to Australian Central Daylight Time (ACDT, UTC+10:30) from the first Sunday in October to the first Sunday in April, but the Northern Territory does not observe daylight saving — so Adelaide and Darwin sit 30 minutes apart in summer and level with each other in winter. The half-hour offset means Adelaide is 30 minutes behind Sydney in winter and level with it during daylight saving, which regularly catches out travellers and meeting planners.
Best time to call between Beijing and ACST
Both Beijing and ACST sit inside the 9 AM – 5 PM working day between 9:00 AM–3:30 PM CST, which is 10:30 AM–5:00 PM ACST. That gives roughly 6 hours and 30 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
Beijing and ACST share 6 hours of working-hours overlap (9:00 AM–3:30 PM CST), so scheduling a live meeting is straightforward.
Beijing is 1 hour 30 minutes ahead of ACST (CST UTC+08:00 → ACST UTC+09:30). The shared working window is 9:00 AM–3:30 PM CST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Beijing
Does not observe DST
ACST
❄ Currently in Standard Time
Standard: UTC+09:30 · DST: UTC+10:30
Clocks spring forward on Sat, Oct 3, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between Beijing and ACST?
Beijing (CST, UTC+08:00) is 1 hour 30 minutes ahead of ACST (ACST, UTC+09:30). The gap is currently +1h 30m.
How do I convert Beijing time to ACST time?
Add +1h 30m to Beijing local time. For example, 9:00 AM in Beijing is 10:30 AM in ACST.
What time is it in ACST right now?
ACST uses ACST at UTC+09:30. Use the live converter at the top of this page — it updates in real time and already accounts for the +1h 30m offset from Beijing.
What is the best time to call ACST from Beijing?
Call between 9:00 AM and 3:30 PM CST — that maps to 10:30 AM–5:00 PM ACST and keeps both parties inside the working day.
Which is ahead, Beijing or ACST?
Beijing is 1 hour 30 minutes ahead of ACST. When it is 12:00 PM in Beijing it is 1:30 PM in ACST.
Do Beijing and ACST use different time zones?
Beijing (China) uses CST at UTC+08:00, while ACST uses ACST at UTC+09:30. The IANA identifiers are Asia/Shanghai and Australia/Adelaide.
Does daylight saving time affect the Beijing–ACST difference?
Neither zone observes daylight saving time, so the +1h 30m offset between Beijing and ACST is fixed all year.
Which other cities share Beijing's time zone?
CST also covers Shanghai, Beijing, Shenzhen, Guangzhou, Chengdu, Hong Kong, Taipei, Wuhan and 2 more.
Which countries use CST, Beijing's zone?
CST is used in China, Hong Kong, Macau, Taiwan.
Is there a day difference between Beijing and ACST?
Not normally. The +1h 30m gap only pushes the date over for late-evening times.
What is the time difference between Beijing and ACST?
ACST is +1h 30m from Beijing.
What timezone is Beijing in?
Beijing operates on its local timezone.
What timezone is ACST in?
ACST operates on its local timezone.
Which countries use CST (China Standard Time)?
CST is used in China, Hong Kong, Macau, Taiwan.
Does CST observe daylight saving time?
No, CST does not observe daylight saving time and remains at UTC+08:00 year-round.
What are some interesting facts about CST?
China uses a single time zone despite spanning 5 geographical zones. In Xinjiang (western China), sunset can be as late as midnight in summer.
Which cities are in the ACST timezone?
Major cities in the ACST timezone include Adelaide, Darwin, Alice Springs, Mount Gambier.
What is the UTC offset for ACST?
Australian Central Standard Time (ACST) is at UTC+09:30. During daylight saving time, it shifts to ACDT.
What should I know about the ACST timezone?
ACST uses a half-hour offset: UTC+09:30. South Australia moves to ACDT (UTC+10:30) in summer; the Northern Territory does not.
When is it midnight in Beijing, what time is it in ACST?
When it is 12:00 AM (midnight) in Beijing (CST), it is +1h 30m later in ACST (ACST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More Beijing time conversions
- beijing to shanghai
- beijing to china
- beijing to dubai
- beijing to mumbai
- beijing to delhi
- beijing to bangalore
- beijing to kathmandu
- beijing to bangkok
- beijing to singapore
- beijing to hong kong
- beijing to tokyo
- beijing to osaka
- beijing to seoul
- beijing to new york
- beijing to london
- beijing to sydney
- beijing to los angeles
- beijing to paris
- beijing to berlin
- beijing to toronto
- new york to beijing
- london to beijing
- dubai to beijing
- tokyo to beijing
- singapore to beijing
- sydney to beijing
- los angeles to beijing
- paris to beijing
- delhi to beijing
- mumbai to beijing
- berlin to beijing
- hong kong to beijing
- toronto to beijing
- kathmandu to beijing
See every conversion from Beijing →·See every conversion from ACST →