ACST ESTTime Converter
ACST (UTC+9:30) is currently 14 hours 30 minutes ahead of EST (UTC−5). Compare live clocks, convert any hour, and find times to meet.
Best time to meet between ACST and EST
Best meeting times:
ACST: 7:00 AM – 11:00 AM
EST: 4:30 PM – 8:30 PM
Quick answer
When it's in ACST, it's the previous day in EST.
ACST runs 14 hours 30 minutes ahead of EST. A 9-to-5 workday on one side lands in the other side's evening or night, so the two cities share almost no normal working hours: edge-of-day calls are the trick.
- Time difference
- −14h 30m
- ACST
- UTC+9:30
- EST
- UTC−5
- Best call window
- Outside 9–6
ACST to EST conversion table
The next 12 hours in ACST and the matching local time in EST. The current hour is highlighted; drag the converter's slider and the table follows.
| ACST | EST |
|---|---|
| NOW Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Daylight saving shifts this gap by up to 2 hours
The difference between ACST and EST swings between 15.5, 14.5 and 13.5 hours across the year as each side starts or ends daylight saving. Regions on ACST switch to ACDT (UTC+10:30) during daylight saving time. Regions on EST switch to EDT (UTC−4) during daylight saving time. This page always shows the live, DST-aware difference.
Related time zone conversions
Jump straight to another pair: every combination is a live tool, not an article.
From ACST
To EST
One source of truth, for you and your AI
This page exposes the same answer as structured data, so when you ask an assistant "what's 9am ACST time in EST?", it can cite the exact, DST-aware result, not a stale blog post.
- Schema.org JSON-LD on every converter page
- A machine-readable facts island with time zone identifiers and every possible offset
- Live times in <time datetime> elements with explicit UTC offsets
{
"pair": "ACST → EST",
"url": "https://worldclock.pro/en/convert/acst-to-est",
"from": {
"name": "ACST",
"type": "timezone",
"abbreviation": "ACST",
"daylightAbbreviation": "ACDT",
"iana": "Australia/Adelaide",
"standardUtcOffset": "+09:30",
"daylightUtcOffset": "+10:30",
"referenceCity": "Adelaide"
},
"to": {
"name": "EST",
"type": "timezone",
"abbreviation": "EST",
"daylightAbbreviation": "EDT",
"iana": "America/New_York",
"standardUtcOffset": "-05:00",
"daylightUtcOffset": "-04:00",
"referenceCity": "New York"
},
"currentDifferenceMinutes": -870,
"possibleDifferencesMinutes": [
-930,
-870,
-810
],
"note": "Between the regions that use these zones the difference is 15.5, 14.5 and 13.5 hours across the year, depending on daylight saving on each side. The clocks on this page show the named zones themselves, which are fixed."
}
Frequently asked questions
What is the time difference between ACST and EST?
ACST is currently 14 hours 30 minutes ahead of EST. ACST is on ACST (UTC+9:30) and EST is on EST (UTC−5). The difference can change when either side starts or ends daylight saving time.
Is EST ahead of or behind ACST?
EST is currently 14 hours 30 minutes behind ACST.
When it is 9:00 AM in ACST, what time is it in EST?
When it is 9:00 AM on a Friday in ACST, it is 6:30 PM the previous day in EST.
Do ACST and EST observe daylight saving time?
Regions on ACST switch to ACDT (UTC+10:30) during daylight saving time. Regions on EST switch to EDT (UTC−4) during daylight saving time.
How do I convert ACST time to EST time?
Subtract 14 hours 30 minutes from any time in ACST to get the time in EST. This page's converter and 24-hour table do it automatically and stay correct through daylight-saving changes.
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