Convert Australian Central Standard Time to Pacific Daylight Time
Instantly convert Australian Central Standard Time (ACST) to Pacific Daylight Time (PDT) with our free online calculator.
Australian Central Standard Time
02:50:53 PM
Wed, Jun 24 (ACST)
Pacific Daylight Time
10:20:53 PM
Tue, Jun 23 (PDT)
Convert a Specific Time
24-Hour Comparison
| ACST | PDT |
|---|---|
| 12:00 AM | 7.5:00 AM(-1d) |
| 1:00 AM | 8.5:00 AM(-1d) |
| 2:00 AM | 9.5:00 AM(-1d) |
| 3:00 AM | 10.5:00 AM(-1d) |
| 4:00 AM | 11.5:00 AM(-1d) |
| 5:00 AM | 0.5:00 PM(-1d) |
| 6:00 AM | 1.5:00 PM(-1d) |
| 7:00 AM | 2.5:00 PM(-1d) |
| 8:00 AM | 3.5:00 PM(-1d) |
| 9:00 AM | 4.5:00 PM(-1d) |
| 10:00 AM | 5.5:00 PM(-1d) |
| 11:00 AM | 6.5:00 PM(-1d) |
| 12:00 PM | 7.5:00 PM(-1d) |
| 1:00 PM | 8.5:00 PM(-1d) |
| 2:00 PM | 9.5:00 PM(-1d) |
| 3:00 PM | 10.5:00 PM(-1d) |
| 4:00 PM | 11.5:00 PM(-1d) |
| 5:00 PM | 0.5:00 AM |
| 6:00 PM | 1.5:00 AM |
| 7:00 PM | 2.5:00 AM |
| 8:00 PM | 3.5:00 AM |
| 9:00 PM | 4.5:00 AM |
| 10:00 PM | 5.5:00 AM |
| 11:00 PM | 6.5:00 AM |
How to Convert Australian Central Standard Time to Pacific Daylight Time
Formula
To convert Australian Central Standard Time (ACST) to Pacific Daylight Time (PDT): Convert ACST to PDT
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 Pacific Daylight Time (PDT)
Pacific Daylight Time (PDT, IANA: America/Los_Angeles during DST window) is the summer-time variant of PST, set at UTC-7:00 — observed from the second Sunday in March to the first Sunday in November per the Energy Policy Act of 2005, which extended the US DST window by ~4 weeks compared to the prior Uniform Time Act of 1966 schedule. PDT is the same offset as Mountain Standard Time (MST), creating a confusing situation where Arizona (which doesn't observe DST and stays on MST year-round) shares the same clock as California during summer months but is one hour behind during winter. PDT is used by ~50 million people in California, Oregon, Washington, Nevada, British Columbia, Yukon, and Baja California Norte. Affects: West-Coast NYSE/Nasdaq market open shifts to 06:30 PDT, professional sports West Coast game-time broadcasts to East Coast PDT prime time, and US Pacific Fleet operations from Naval Base San Diego.