Convert Australian Central Standard Time to Central Standard Time
Instantly convert Australian Central Standard Time (ACST) to Central Standard Time (CST) with our free online calculator.
Australian Central Standard Time
02:50:53 PM
Wed, Jun 24 (ACST)
Central Standard Time
11:20:53 PM
Tue, Jun 23 (CST)
Convert a Specific Time
24-Hour Comparison
| ACST | CST |
|---|---|
| 12:00 AM | 8.5:00 AM(-1d) |
| 1:00 AM | 9.5:00 AM(-1d) |
| 2:00 AM | 10.5:00 AM(-1d) |
| 3:00 AM | 11.5:00 AM(-1d) |
| 4:00 AM | 0.5:00 PM(-1d) |
| 5:00 AM | 1.5:00 PM(-1d) |
| 6:00 AM | 2.5:00 PM(-1d) |
| 7:00 AM | 3.5:00 PM(-1d) |
| 8:00 AM | 4.5:00 PM(-1d) |
| 9:00 AM | 5.5:00 PM(-1d) |
| 10:00 AM | 6.5:00 PM(-1d) |
| 11:00 AM | 7.5:00 PM(-1d) |
| 12:00 PM | 8.5:00 PM(-1d) |
| 1:00 PM | 9.5:00 PM(-1d) |
| 2:00 PM | 10.5:00 PM(-1d) |
| 3:00 PM | 11.5:00 PM(-1d) |
| 4:00 PM | 0.5:00 AM |
| 5:00 PM | 1.5:00 AM |
| 6:00 PM | 2.5:00 AM |
| 7:00 PM | 3.5:00 AM |
| 8:00 PM | 4.5:00 AM |
| 9:00 PM | 5.5:00 AM |
| 10:00 PM | 6.5:00 AM |
| 11:00 PM | 7.5:00 AM |
How to Convert Australian Central Standard Time to Central Standard Time
Formula
To convert Australian Central Standard Time (ACST) to Central Standard Time (CST): Convert ACST to CST
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 Central Standard Time (CST)
Central Standard Time (CST, IANA: America/Chicago, America/Mexico_City) is the time zone for the US Central region, central Mexico, and most of Central America, set at UTC-6:00. CST is the most populous US time zone by area covered and serves the Chicago-Dallas-Houston-Minneapolis corridor of ~80 million people across CST states (Texas, Illinois, Wisconsin, Minnesota, Iowa, Missouri, Arkansas, Louisiana, Mississippi, Alabama, Tennessee western, Kansas eastern, Nebraska eastern, Oklahoma, North Dakota, South Dakota, Kentucky western, Indiana western, Michigan UP, Florida panhandle) plus Mexico (Mexico City, Guadalajara, Monterrey since 2022 DST abolition), Honduras, Nicaragua, El Salvador, Costa Rica, Guatemala, Belize. CST observes DST (switching to CDT = UTC-5:00) per Energy Policy Act 2005 — except for Mexico nationally, which abolished DST in 2022 except for border zones aligning with US DST. CST affects: NYSE close at 15:00 CST, CME (Chicago Mercantile Exchange) commodity futures pit/electronic hours, Texas Medical Center coordinated patient handoffs.