PST vs AEST Time Difference

PST (Pacific Standard Time, UTC-8) and AEST (Australian Eastern Standard Time, UTC+10) are 18 hours apart, with AEST 18 hours ahead of PST and PST 18 hours behind AEST.

Looking for Pitcairn Standard Time? See /time-converter/pst-pitcairn-time-zone.

How to Find the Time Difference Between PST and AEST

1. Open the PST vs AEST converter: Visit https://www.xconvert.com/time-converter/pst-vs-aest to see Pacific Standard Time and Australian Eastern Standard Time already loaded in the comparison grid. This view is useful when you are planning a call between the west coast of the United States or Canada and eastern Australia, such as coordinating with teams in technology, customer support, logistics, or media production.

2. Add comparison cities: Click + Add City and add cities that commonly connect with Pacific Standard Time and Australian Eastern Standard Time workflows, such as Los Angeles, Vancouver, Sydney, or Brisbane. This helps remote teams compare west coast North America with Australia for software releases, agency-client meetings, university collaboration, or travel planning across Pacific flight routes.

3. Select a workable meeting window: Click Select to enter selection mode, then drag across the colored grid to highlight a time range in purple; you can move the range by dragging the center or fine-tune it with the left and right handles. For example, if you drag a block starting at 9:00 PST, the grid shows 3:00 AEST the next day; 12:00 PST = 6:00 AEST (next day), 15:00 PST = 9:00 AEST (next day), and 18:00 PST = 12:00 AEST (next day), which quickly shows why late-afternoon Pacific Standard Time often becomes the next morning in eastern Australia.

4. Export the selected time: After selecting a range, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. This is practical when you need to send a confirmed handoff window to an engineering team, invite Australian clients to a sales call, or share a calendar-ready slot so everyone sees the meeting in their own local time.

PST vs AEST Offset Explained

Pacific Standard Time is UTC-8, while Australian Eastern Standard Time is UTC+10. The fixed relationship used on this page is that AEST is 18 hours ahead of PST, so when the workday is underway in Pacific Standard Time, the corresponding time in Australian Eastern Standard Time is usually on the following calendar day.

This difference matters for scheduling because the date changes across the conversion. A few common examples make that clear: 9:00 PST = 3:00 AEST (next day), 12:00 PST = 6:00 AEST (next day), 15:00 PST = 9:00 AEST (next day), and 18:00 PST = 12:00 AEST (next day). For business calls, that means a Pacific Standard Time afternoon meeting often lands in the next morning or midday in eastern Australia, which can work well for overnight handoffs between product, support, and operations teams.

Both abbreviations are standard-time abbreviations, not year-round labels. Pacific Standard Time uses PDT as its daylight saving counterpart, and Australian Eastern Standard Time uses AEDT as its daylight saving counterpart, so seasonal clock changes can affect whether you should be using PST or AEST for a specific date. This is especially important for recurring meetings between companies in the United States, Canada, or Mexico and partners in Australia, because a meeting labeled with the wrong seasonal abbreviation can shift by an hour even when the cities stay the same.

When PST and AEST Are Commonly Compared

Pacific Standard Time is used in Canada, Mexico, and the United States, while Australian Eastern Standard Time is used in Australia. That makes this comparison especially relevant for companies managing trans-Pacific work, including SaaS teams with developers on the North American west coast and operations, design, or support staff in eastern Australia.

The 18-hour gap is also important for travel and communication planning. If a team in Pacific Standard Time sends an end-of-day update, colleagues in Australian Eastern Standard Time may receive it the next morning, which supports follow-the-sun workflows for customer service, incident response, and content publishing. For travelers, the next-day shift helps explain why departure-day coordination, airport pickup timing, and hotel check-in messages between North America and Australia need careful date confirmation, not just time confirmation.

Scheduling Tips for PST to AEST Meetings

Pacific Standard Time to Australian Eastern Standard Time scheduling works best when you deliberately choose whether the meeting should happen in the Pacific morning or Pacific afternoon. Using the examples here, 15:00 PST = 9:00 AEST (next day) and 18:00 PST = 12:00 AEST (next day), so a late Pacific work session can line up with the start of the Australian business day.

This pattern is useful for specific business situations. A California product team can finish a sprint review in Pacific Standard Time and hand work to an Australian QA or support team for the next day, while an Australian account manager can join a midday AEST call that corresponds to the previous afternoon in Pacific Standard Time. The key operational detail is to confirm both the time and the day, because AEST is always shown here as the next day relative to the listed PST examples.

Frequently Asked Questions

What is the time difference between PST and AEST?

Pacific Standard Time is 18 hours behind Australian Eastern Standard Time, and Australian Eastern Standard Time is 18 hours ahead of Pacific Standard Time. In practical terms, that means a time chosen in Pacific Standard Time usually maps to the next day in AEST, such as 9:00 PST = 3:00 AEST (next day).

Is AEST always ahead of PST?

Yes, in this comparison Australian Eastern Standard Time is 18 hours ahead of Pacific Standard Time. That is why 12:00 PST = 6:00 AEST (next day) and 18:00 PST = 12:00 AEST (next day), making date rollover one of the most important details when booking calls or planning travel communication.

How do I convert Pacific Standard Time to Australian Eastern Standard Time for meetings?

Use the grid to compare Pacific Standard Time and Australian Eastern Standard Time visually, then drag across a proposed meeting block to see how it lands on the other side. The supplied examples are a good starting point for business scheduling: 15:00 PST = 9:00 AEST (next day) is useful for a Pacific afternoon meeting that becomes an Australian morning meeting, while 18:00 PST = 12:00 AEST (next day) can suit midday availability in Australia.

Why does PST to AEST usually fall on the next day?

The reason is the size of the offset gap: Pacific Standard Time is UTC-8 and Australian Eastern Standard Time is UTC+10, creating an 18-hour difference. Because the gap is so large, many Pacific Standard Time hours cross midnight when converted to AEST, which is why the examples on this page all show next day results.

Does daylight saving time affect PST vs AEST?

Yes, because PST and AEST are both standard-time abbreviations, and each has a daylight saving counterpart. Pacific Standard Time changes to PDT, and Australian Eastern Standard Time changes to AEDT, so if you are arranging recurring calls with teams in Australia and the west coast of North America, using the correct seasonal abbreviation is essential to avoid a one-hour scheduling mistake.

Which countries use PST and AEST?

Pacific Standard Time is used in Canada, Mexico, and the United States. Australian Eastern Standard Time is used in Australia, which is why this comparison is common for trans-Pacific business, education, tourism, and remote team coordination.

Is PST Pacific Standard Time or Pitcairn Standard Time?

On this page, PST means Pacific Standard Time (UTC-8). PST can also mean Pitcairn Standard Time (UTC-8), and if you need that meaning, use /time-converter/pst-pitcairn-time-zone instead so you are comparing the correct time zone context.