What is the time difference between EST and AEST?

Australian Eastern Standard Time (AEST) is 15 hours ahead of Eastern Standard Time (EST). EST uses a UTC offset of UTC-4, while AEST uses UTC+11. For example, when it's 9:00 AM in EST, it's 12:00 AM in AEST. Note that this difference may shift by one hour during daylight saving time transitions if the two zones change on different dates. Use the conversion table above to see the exact time for each hour of the day.

How do I convert EST to AEST?

To convert EST to AEST, add 15 hours to the EST time. For example, 9:00 AM EST is 12:00 AM AEST, and 5:00 PM EST is 8:00 AM AEST. Keep in mind that during daylight saving time transitions, the offset between these timezones may temporarily change by one hour. You can also use the interactive converter above for quick, accurate results.

What time is it in AEST when it's noon in EST?

When it's 12:00 PM (noon) in EST, it's 3:00 AM in AEST. This is because AEST is 15 hours ahead of EST. Similarly, when it's 6:00 PM in EST, it's 9:00 AM in AEST. During daylight saving time transitions, these times may shift by one hour, so always verify the current offset. The color-coded conversion table above shows every hour mapped between both timezones.

How many hours ahead is AEST from EST?

AEST is 15 hours ahead of EST. This means when it's 9:00 AM in EST, it's 12:00 AM in AEST, and when it's midnight in EST, it's 3:00 PM in AEST. The exact difference can vary by one hour during daylight saving time transitions. The conversion table above provides a complete hour-by-hour mapping.

Is AEST ahead or behind EST?

AEST is ahead of EST by 15 hours. Clocks in AEST show a later time than EST, meaning the day starts earlier in AEST relative to EST. For example, when it's morning in EST, it's already afternoon or evening in AEST. This gap may change by one hour during DST transitions.

Does EST observe daylight saving time?

Yes, Eastern Standard Time observes daylight saving time. During DST, the abbreviation changes to EDT and clocks move forward by one hour, typically in spring. Clocks then fall back in autumn, returning to standard EST time. This means the UTC offset for EST shifts between two values depending on the season. Check our DST change calendar for exact transition dates that may affect your EST to AEST conversions.

Does AEST observe daylight saving time?

Yes, Australian Eastern Standard Time observes daylight saving time. During DST, the abbreviation changes to AEDT and clocks move forward by one hour, typically in spring. Clocks then fall back in autumn, returning to standard AEST time. This means the UTC offset for AEST shifts between two values depending on the season. Check our DST change calendar for exact transition dates that may affect your EST to AEST conversions.

What is the best time to call from EST to AEST?

The best time for a call between EST and AEST is during overlapping business hours (9 AM – 5 PM) in both timezones. To reach someone in AEST during their work day, call between 6:00 PM and 2:00 AM your EST time. Avoid calling too early or late, as the 15 hours difference means your evening could be their late night. Check the color-coded conversion table above — green hours indicate business hours in both zones, making it easy to find the ideal time.

When does daylight saving time change in EST?

Daylight saving time transitions vary by year and region. Eastern Standard Time observes DST, which typically shifts clocks forward by one hour in spring ("spring forward") and back in fall ("fall back"). During these transition periods, the time difference between EST and AEST may temporarily change by one hour, which can cause confusion for scheduled meetings or calls. It's important to double-check your conversions around transition dates, especially if the two timezones switch on different dates. Check our DST change calendar for exact transition dates in the current year.

Do EST and AEST ever have the same time?

No, EST and AEST are always 15 hours apart and never display the same clock time simultaneously. Both timezones observe DST and typically transition around the same period, so the standard difference remains consistent throughout the year. The 15 hours offset is determined by their fixed positions relative to the Prime Meridian (UTC). You can always rely on this consistent difference when planning across these timezones.

EST to AEST Converter

Convert Eastern Standard Time to Australian Eastern Standard Time. See the hour-by-hour conversion table below.

Upcoming DST Change

Australian Eastern Time (AEDT) will fall back on April 5. Clocks will shift by 1 hour (AEDT → AEST).

View all DST changes

Timezone Details

Eastern Standard Time

4:49 AM

Saturday, April 4, 2026

EDT (UTC-04:00)

Australian Eastern Standard Time

7:49 PM

Saturday, April 4, 2026

AEDT (UTC+11:00)

Difference: +15 hours

EDT DST: Yes (EDT)

AEDT DST: Yes (AEDT)

24-Hour Overview

EDT — 24-hour overview

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

NightMorningBusinessEvening

AEDT — 24-hour overview

3p3p

6p6p

9p9p

10p

11p

12a12a

2a2a

5a5a

8a8a

10a

11a11a

12p

NightMorningBusinessEvening

Frequently Asked Questions

Related Conversions

AEST to EST EST to PST PST to EST EST to GMT GMT to EST EST to IST IST to EST EST to CET CET to EST

Cities in These Timezones

EST Cities

New York Philadelphia Washington D.C.Boston Atlanta

AEST Cities

Sydney Canberra

More Tools

Compare EST & AEST Plan a Meeting (EST & AEST)See on Map

Learn More

How Time Zones Work Understanding DST Timezone Abbreviations

External Resources

Eastern Standard Time on Wikipedia Australian Eastern Standard Time on Wikipedia IANA Time Zone Database