What is EST in ACST?
Australian Central Time is 15 hours 30 minutes ahead
Convert a time
ACDT — Australian Central Time
6:30 pm
ACDT, Sat
- Time in New York
- 3:28:48 AM
- Time in Adelaide
- 6:58:48 PM
- Difference
- +15:30 h
- Next clock change
- March 14, 2027
When the difference changes
Eastern Time and Australian Central Time do not change their clocks on the same dates, so the gap between them is not the same all year. Most converters show only today’s figure. These are the periods ahead:
- Now – March 14, 2027Australian Central Time is 15 hours 30 minutes ahead
- March 14, 2027 – April 3, 2027Australian Central Time is 14 hours 30 minutes ahead
- April 3, 2027 – October 2, 2027Australian Central Time is 13 hours 30 minutes ahead
- October 2, 2027 – November 7, 2027Australian Central Time is 14 hours 30 minutes ahead
- November 7, 2027 – onwardsAustralian Central Time is 15 hours 30 minutes ahead
Periods shorter than a day are not listed. Each zone changes at its own local time, so on a date when both move there are a few hours when the gap is briefly something else.
Daylight saving
Eastern Time
Clocks go forward one hour — 2:00 am becomes 3:00 am local time, and the zone is on EDT after that.
Australian Central Time
Clocks go back one hour — 3:00 am becomes 2:00 am local time, and the zone is on ACST after that.
EST to ACST conversion table
Every hour of Saturday, November 7, 2026, converted from Eastern Time to Australian Central Time. 15 of the 24 hours fall on a different calendar day in Adelaide, which is marked.
- 12:00 am EST
- 3:30 pm ACDT
- 1:00 am EST
- 4:30 pm ACDT
- 2:00 am EST
- 5:30 pm ACDT
- 3:00 am EST
- 6:30 pm ACDT
- 4:00 am EST
- 7:30 pm ACDT
- 5:00 am EST
- 8:30 pm ACDT
- 6:00 am EST
- 9:30 pm ACDT
- 7:00 am EST
- 10:30 pm ACDT
- 8:00 am EST
- 11:30 pm ACDT
- 9:00 am EST
- 12:30 am ACDT+1 day
- 10:00 am EST
- 1:30 am ACDT+1 day
- 11:00 am EST
- 2:30 am ACDT+1 day
- 12:00 pm EST
- 3:30 am ACDT+1 day
- 1:00 pm EST
- 4:30 am ACDT+1 day
- 2:00 pm EST
- 5:30 am ACDT+1 day
- 3:00 pm EST
- 6:30 am ACDT+1 day
- 4:00 pm EST
- 7:30 am ACDT+1 day
- 5:00 pm EST
- 8:30 am ACDT+1 day
- 6:00 pm EST
- 9:30 am ACDT+1 day
- 7:00 pm EST
- 10:30 am ACDT+1 day
- 8:00 pm EST
- 11:30 am ACDT+1 day
- 9:00 pm EST
- 12:30 pm ACDT+1 day
- 10:00 pm EST
- 1:30 pm ACDT+1 day
- 11:00 pm EST
- 2:30 pm ACDT+1 day
Scheduling between the two
There is no overlap between a nine-to-six working day in New York and one in Adelaide — the gap is too wide. A call has to sit early or late for one side. Early morning in New York is the usual compromise, since that is late afternoon or evening in Adelaide.
Eastern Time (EST) is used in Toronto, Atlanta, Miami, Detroit and most of the US east coast
Australian Central Time (ACDT) is used in South Australia and the Northern Territory, on a half-hour offset from the east coast
Other conversions
- ACST to EST
- EST to UTC
- EST to GMT
- EST to CST
- EST to MST
- EST to PST
- EST to AKST
- EST to HST
- EST to BST
- EST to CET
- EST to IST
- EST to CST (China)
- EST to JST
- EST to AEST
- EST to AST
- EST to Mexico City
- EST to BRT
- EST to ART
- EST to EET
- EST to WET
- EST to MSK
- EST to TRT
- EST to SAST
- EST to WAT
- EST to EAT
- EST to GST
- EST to PKT
- EST to ICT
- EST to WIB
- EST to SGT
- EST to HKT
- EST to KST
- EST to PHT
- EST to AWST
- EST to NZST
- All zones