PST to AEDT Converter
Convert time between Pacific Standard Time (PST) and Australian Eastern Daylight Time (AEDT)
Pacific Standard Time (PST)
Australian Eastern Daylight Time (AEDT)
Time Difference
Australian Eastern Daylight Time (AEDT) is 0 hours ahead of Pacific Standard Time (PST)
Select Date
Select Time
Quick Reference
| PST | AEDT |
|---|---|
| 19:00 | 12:00 |
| 21:00 | 14:00 |
| 23:00 | 16:00 |
| 01:00 | 18:00 |
| 03:00 | 20:00 |
| 05:00 | 22:00 |
| 07:00 | 00:00 |
| 09:00 | 02:00 |
| 11:00 | 04:00 |
| 13:00 | 06:00 |
| 15:00 | 08:00 |
| 17:00 | 10:00 |
Top 10 Most Common Time Zones
| Abbreviation | Full Name | UTC Offset | Typical Use |
|---|---|---|---|
| UTC | Coordinated Universal Time | UTC ±0 | Global reference standard (servers, logs, APIs) |
| EST / EDT | Eastern (US) Time | UTC −5 / −4 | New York, Toronto — North American business hub |
| CST / CDT | Central (US) Time | UTC −6 / −5 | Chicago, Dallas — US central business region |
| PST / PDT | Pacific (US) Time | UTC −8 / −7 | San Francisco, Los Angeles — tech industry standard |
| GMT / BST | Greenwich Mean / British Summer Time | UTC 0 / +1 | UK, used globally as a reference with UTC |
| CET / CEST | Central European (Summer) Time | UTC +1 / +2 | Paris, Berlin, Amsterdam — EU business core |
| IST | India Standard Time | UTC +5:30 | India — major IT & outsourcing region |
| CST | China Standard Time | UTC +8 | Beijing, Shanghai — East Asia business hub |
| JST | Japan Standard Time | UTC +9 | Tokyo — finance & tech hub |
| AEST / AEDT | Australian Eastern (Daylight) Time | UTC +10 / +11 | Sydney, Melbourne — APAC regional business |
Why Time Zone Abbreviations Are Ambiguous
Unlike standardized identifiers (like America/New_York or Europe/London from the IANA tz database), abbreviations such as "CST" or "IST" are not globally unique. They can refer to different time zones depending on context — country, region, or even time of year (due to daylight saving time).
Common Ambiguous Time Zone Abbreviations
| Abbrev. | Common Meaning(s) | UTC Offset | Region(s) |
|---|---|---|---|
| CST | Central Standard Time / China Standard Time / Cuba Standard Time | UTC−6 / UTC+8 / UTC−5 | North America, China, Cuba |
| IST | Indian Standard Time / Irish Standard Time / Israel Standard Time | UTC+5:30 / UTC+1 / UTC+2 | India, Ireland, Israel |
| AST | Atlantic Standard Time / Arabia Standard Time | UTC−4 / UTC+3 | Caribbean, Canada, Middle East |
| PST | Pacific Standard Time / Philippine Standard Time | UTC−8 / UTC+8 | North America, Philippines |
| EST | Eastern Standard Time (North America / Australia) | UTC−5 / UTC+10 | North America, Australia |
✅ Best Practice
To avoid ambiguity, always:
- Use IANA tz identifiers — e.g.,
America/New_Yorkinstead of "EST" - Specify UTC offset explicitly — e.g.,
UTC−5when abbreviations must be used - Include the full timezone name — e.g., "Eastern Standard Time (EST)" with UTC offset
About PST to AEDT Time Conversion
Converting time between Pacific Standard Time (PST) and Australian Eastern Daylight Time (AEDT) spans a 19-hour difference. PST is UTC-8 and is observed along the US and Canadian Pacific coast during winter, while AEDT is UTC+11 and covers eastern Australia during its summer months, making AEDT 19 hours ahead of PST.
This time zone converter uses the IANA timezone database to ensure accurate calculations, accounting for daylight saving time transitions in both regions. Whether you're scheduling business meetings, managing remote teams, or staying in touch with contacts between Los Angeles and Sydney during the US winter season, our converter provides reliable results for this large 19-hour gap.
Common Use Cases for PST to AEDT Conversion
Business & Work
- Scheduling meetings between US West Coast teams and Sydney or Melbourne offices during US winter
- Coordinating project deadlines and deliverables across the 19-hour time gap
- Planning conference calls and webinars for Pacific-Australia partnerships from November through March
Personal & Travel
- Planning travel itineraries and flight connections between the US West Coast and eastern Australia
- Coordinating with family and friends living in Sydney, Melbourne, or Canberra during US winter
- Scheduling virtual events and online activities across the large time difference
Time Zone Information
Pacific Standard Time (PST)
- UTC Offset: UTC-8
- IANA Timezone: America/Los_Angeles
- Daylight Saving: Observes PDT (UTC-7) from second Sunday in March to first Sunday in November
- Major Cities: Los Angeles, San Francisco, Seattle, Portland, Vancouver
- Coverage: Pacific United States and Canada during winter months
Australian Eastern Daylight Time (AEDT)
- UTC Offset: UTC+11
- IANA Timezone: Australia/Sydney
- Daylight Saving: First Sunday in October to First Sunday in April
- Major Cities: Sydney, Melbourne, Canberra, Hobart, Newcastle
- Coverage: Eastern Australia (New South Wales, Victoria, ACT, Tasmania) during summer
Quick Reference: PST to AEDT
Remember: AEDT is always 19 hours ahead of PST
Frequently Asked Questions
What is the time difference between PST and AEDT?
Pacific Standard Time (PST) is UTC-8, while Australian Eastern Daylight Time (AEDT) is UTC+11. AEDT is 19 hours ahead of PST. When it's 12:00 PM in Los Angeles, it's 7:00 AM the next day in Sydney.
When does the PST to AEDT conversion apply?
This 19-hour conversion applies when the US Pacific coast is on PST (first Sunday in November to second Sunday in March) and eastern Australia is on AEDT (first Sunday in October to first Sunday in April). The overlap runs from early November through late March.
How does the time difference change throughout the year?
When the US Pacific coast switches to PDT (UTC-7) in March, the gap shrinks to 18 hours. When Australia ends AEDT in early April and reverts to AEST (UTC+10), the offset from PST drops to 18 hours as well. The 19-hour gap is specific to the November–March period when PST and AEDT overlap.
What are the best times for PST to AEDT business calls?
Late afternoon on the US West Coast works best. 4:00–6:00 PM PST aligns with 11:00 AM–1:00 PM AEDT in Sydney the next day, which is mid-morning to early afternoon in Australia. Early morning Sydney time (8:00–9:00 AM AEDT) corresponds to 1:00–2:00 PM PST the previous day, also a workable window.
Which regions use AEDT?
AEDT (UTC+11) is observed during summer by New South Wales, Victoria, the Australian Capital Territory, and Tasmania. Major cities include Sydney, Melbourne, Canberra, and Hobart. Queensland does not observe AEDT and remains on AEST (UTC+10) year-round.
Which regions use PST?
PST (UTC-8) is used during winter by California, Oregon, Washington, Nevada, and British Columbia. Major cities include Los Angeles, San Francisco, Seattle, Portland, and Vancouver. These regions switch to PDT (UTC-7) from March to November.
Pro Tips
- • AEDT is 19 hours ahead of PST — adding 19 hours always pushes you into the next calendar day.
- • Late afternoon PST (4:00–6:00 PM) is the best window to reach Sydney during business hours the next morning.
- • The 19-hour offset is specific to the US winter months (November–March) when PST and AEDT overlap.
- • When the US switches to PDT in March, the gap shrinks to 18 hours — update your scheduling templates accordingly.
- • Queensland (Brisbane) stays on AEST year-round — the PST to Brisbane offset is 18 hours, not 19.
- • For regular PST–AEDT collaboration, late afternoon West Coast time minimises disruption for both parties.