What is the time difference between AEST and EST?

Eastern Standard Time (EST) is 15 hours behind Australian Eastern Standard Time (AEST). AEST uses a UTC offset of UTC+11, while EST uses UTC-4. For example, when it's 9:00 AM in AEST, it's 6:00 PM in EST. 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 AEST to EST?

To convert AEST to EST, subtract 15 hours from the AEST time. For example, 9:00 AM AEST is 6:00 PM EST, and 5:00 PM AEST is 2:00 AM EST. 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 EST when it's noon in AEST?

When it's 12:00 PM (noon) in AEST, it's 9:00 PM in EST. This is because EST is 15 hours behind AEST. Similarly, when it's 6:00 PM in AEST, it's 3:00 AM in EST. 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 behind is EST from AEST?

EST is 15 hours behind AEST. This means when it's 9:00 AM in AEST, it's 6:00 PM in EST, and when it's midnight in AEST, it's 9:00 AM in EST. 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 EST ahead or behind AEST?

EST is behind AEST by 15 hours. Clocks in EST show an earlier time than AEST, meaning the day starts later in EST relative to AEST. For example, when it's noon in AEST, it's still 9:00 PM in EST. This gap may change by one hour during DST transitions.

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 AEST to EST conversions.

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 AEST to EST conversions.

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

The best time for a call between AEST and EST is during overlapping business hours (9 AM – 5 PM) in both timezones. To reach someone in EST during their work day, call between 12:00 AM and 8:00 AM your AEST time. Avoid calling too early or late, as the 15 hours difference means your evening could be their early morning. 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 AEST?

Daylight saving time transitions vary by year and region. Australian 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 AEST and EST 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 AEST and EST ever have the same time?

No, AEST and EST 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.

AEST to EST Converter

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

Upcoming DST Change

Eastern Time (EDT) will fall back on November 1. Clocks will shift by 1 hour (EDT → EST).

View all DST changes

Timezone Details

Australian Eastern Standard Time

12:48 PM

Sunday, October 25, 2026

AEDT (UTC+11:00)

Eastern Standard Time

9:48 PM

Saturday, October 24, 2026

EDT (UTC-04:00)

Difference: -15 hours

AEDT DST: Yes (AEDT)

EDT DST: Yes (EDT)

24-Hour Overview

AEDT — 24-hour overview

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

NightMorningBusinessEvening

EDT — 24-hour overview

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

12a12a

3a3a

6a6a

NightMorningBusinessEvening

Frequently Asked Questions

Related Conversions

EST to AEST 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

AEST Cities

Sydney Canberra

EST Cities

New York Philadelphia Washington D.C.Boston Atlanta

More Tools

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

Learn More

How Time Zones Work Understanding DST Timezone Abbreviations

External Resources

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