Convert Australian Central Standard Time to Eastern Daylight Time
Instantly convert Australian Central Standard Time (ACST) to Eastern Daylight Time (EDT) with our free online calculator.
Australian Central Standard Time
02:50:53 PM
Wed, Jun 24 (ACST)
Eastern Daylight Time
01:20:53 AM
Wed, Jun 24 (EDT)
Convert a Specific Time
24-Hour Comparison
| ACST | EDT |
|---|---|
| 12:00 AM | 10.5:00 AM(-1d) |
| 1:00 AM | 11.5:00 AM(-1d) |
| 2:00 AM | 0.5:00 PM(-1d) |
| 3:00 AM | 1.5:00 PM(-1d) |
| 4:00 AM | 2.5:00 PM(-1d) |
| 5:00 AM | 3.5:00 PM(-1d) |
| 6:00 AM | 4.5:00 PM(-1d) |
| 7:00 AM | 5.5:00 PM(-1d) |
| 8:00 AM | 6.5:00 PM(-1d) |
| 9:00 AM | 7.5:00 PM(-1d) |
| 10:00 AM | 8.5:00 PM(-1d) |
| 11:00 AM | 9.5:00 PM(-1d) |
| 12:00 PM | 10.5:00 PM(-1d) |
| 1:00 PM | 11.5:00 PM(-1d) |
| 2:00 PM | 0.5:00 AM |
| 3:00 PM | 1.5:00 AM |
| 4:00 PM | 2.5:00 AM |
| 5:00 PM | 3.5:00 AM |
| 6:00 PM | 4.5:00 AM |
| 7:00 PM | 5.5:00 AM |
| 8:00 PM | 6.5:00 AM |
| 9:00 PM | 7.5:00 AM |
| 10:00 PM | 8.5:00 AM |
| 11:00 PM | 9.5:00 AM |
How to Convert Australian Central Standard Time to Eastern Daylight Time
Formula
To convert Australian Central Standard Time (ACST) to Eastern Daylight Time (EDT): Convert ACST to EDT
About Australian Central Standard Time (ACST)
Australian Central Standard Time (ACST, IANA: Australia/Adelaide, Australia/Darwin) is the civil time of South Australia (SA) + Northern Territory (NT) + Broken Hill area of New South Wales, set at UTC+9:30 — one of the few 30-minute-offset time zones in the developed world. South Australia observes Daylight Saving Time per state legislation (switching to ACDT = UTC+10:30) from the first Sunday of October to the first Sunday of April, while Northern Territory does NOT observe DST (stays on ACST year-round). The 30-minute offset is preserved because central Australia's longitudinal position (135°E) falls between Australian Western Standard Time (AWST = UTC+8) and Australian Eastern Standard Time (AEST = UTC+10), and the colonial-era decision was to split the difference. ACST serves approximately 1.9 million Australians: 1.7M in SA + 250K in NT + 20K in Broken Hill NSW. Major ACST cities: Adelaide (1.4M metro — South Australia capital), Darwin (150K — Northern Territory capital and the gateway to Asia from northern Australia), Alice Springs (25K — center of Australian Outback tourism + Uluru-Kata Tjuta National Park access), Mount Gambier (30K), Whyalla (22K), Broken Hill NSW (18K). Affects: ASX-South-Australian-listed mining-company operations, Darwin port shipping to Indonesia + Timor-Leste.
About Eastern Daylight Time (EDT)
Eastern Daylight Time (EDT, IANA: America/New_York during DST window) is the summer-time variant of EST, set at UTC-4:00 — observed from the second Sunday in March to the first Sunday in November per the US Energy Policy Act of 2005. EDT shares the same UTC offset as Atlantic Standard Time (AST — observed year-round in Canadian Maritimes Nova Scotia/New Brunswick/PEI and in Caribbean Puerto Rico/USVI/Bermuda) and as Bolivia/Chile/Paraguay Standard Time. The 'spring forward' transition at 02:00 EDT in March is the largest single coordinated time change in human history, affecting ~150 million US East Coast residents simultaneously per US Census. Florida passed the Sunshine Protection Act in 2018 attempting to stay on EDT year-round, but it required US Congressional approval (US Code 15 §260a) which has not been granted as of 2024. EDT affects: US Federal Government tax-filing deadlines (IRS Form 1040 due 23:59 EDT on April 15), NFL Sunday Night Football scheduling, and US Supreme Court oral-argument schedules in DC.