EST to Adelaide Time Converter
ACDT is 15 hours 30 minutes ahead of EST. 9:00 AM EST = 12:30 AM ACDT (next day).
ACDT is 15 hours 30 minutes ahead of EST at the moment. To convert EST to Adelaide Time, add 15 hours 30 minutes to the EST time: 9:00 AM EST = 12:30 AM ACDT (next day).
EST (Eastern Time) is used in New York, Washington DC, Florida, Georgia, Ohio, Michigan, Ontario, Quebec, Panama and Jamaica (all year). Adelaide Time (Adelaide time) is used in Adelaide, Australia.
EST to Adelaide Time time conversion table
EST to Adelaide Time on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| EST | Adelaide Time | Day |
|---|---|---|
| 12:00 AM EST | 3:30 PM ACDT | — |
| 1:00 AM EST | 4:30 PM ACDT | — |
| 2:00 AM EST | 5:30 PM ACDT | — |
| 3:00 AM EST | 6:30 PM ACDT | — |
| 4:00 AM EST | 7:30 PM ACDT | — |
| 5:00 AM EST | 8:30 PM ACDT | — |
| 6:00 AM EST | 9:30 PM ACDT | — |
| 7:00 AM EST | 10:30 PM ACDT | night |
| 8:00 AM EST | 11:30 PM ACDT | night |
| 9:00 AM EST | 12:30 AM ACDT | next day |
| 10:00 AM EST | 1:30 AM ACDT | next day |
| 11:00 AM EST | 2:30 AM ACDT | next day |
| 12:00 PM EST | 3:30 AM ACDT | next day |
| 1:00 PM EST | 4:30 AM ACDT | next day |
| 2:00 PM EST | 5:30 AM ACDT | next day |
| 3:00 PM EST | 6:30 AM ACDT | next day |
| 4:00 PM EST | 7:30 AM ACDT | next day |
| 5:00 PM EST | 8:30 AM ACDT | next day |
| 6:00 PM EST | 9:30 AM ACDT | next day |
| 7:00 PM EST | 10:30 AM ACDT | next day |
| 8:00 PM EST | 11:30 AM ACDT | next day |
| 9:00 PM EST | 12:30 PM ACDT | next day |
| 10:00 PM EST | 1:30 PM ACDT | next day |
| 11:00 PM EST | 2:30 PM ACDT | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert EST to Adelaide Time
Add 15 hours 30 minutes to the EST time to get Adelaide Time.
Example: 9:00 AM EST = 12:30 AM ACDT (next day).
Across midnight: 10:00 PM EST = 1:30 PM ACDT (next day). The date changes, so always check the day as well as the hour.
Time difference between EST and Adelaide Time
The time difference between EST and Adelaide Time is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 31 Dec 2025 – 7 Mar 2026: Adelaide Time is 15 hours 30 minutes ahead of EST.
- 8 Mar 2026 – 3 Apr 2026: Adelaide Time is 14 hours 30 minutes ahead of EST.
- 4 Apr 2026 – 2 Oct 2026: Adelaide Time is 13 hours 30 minutes ahead of EST.
- 3 Oct 2026 – 31 Oct 2026: Adelaide Time is 14 hours 30 minutes ahead of EST.
- 1 Nov 2026 – 30 Dec 2026: Adelaide Time is 15 hours 30 minutes ahead of EST.
EST and Adelaide Time during daylight saving time
- EST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from EST (UTC−5) to EDT (UTC−4).
- Adelaide Time next changes on 4 Apr 2027: clocks go back one hour at 02:59 local time, from ACDT (UTC+10:30) to ACST (UTC+9:30).
Best time for a meeting between EST and Adelaide Time
EST and Adelaide Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 4:00 PM EST, which is 7:30 AM ACDT.
EST to Adelaide Time FAQ
What is the time difference between EST and Adelaide Time?
Right now ACDT is 15 hours 30 minutes ahead of EST. The gap changes 5 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM EST in Adelaide Time?
9:00 AM EST is 12:30 AM ACDT (next day).
What is 12 PM (noon) EST in Adelaide Time?
12:00 PM EST is 3:30 AM ACDT (next day).
Is Adelaide Time ahead of or behind EST?
ACDT is 15 hours 30 minutes ahead of EST, so it is later in Adelaide Time than in EST.
Does EST change for daylight saving time?
Yes. EST next changes on 14 Mar 2027, when clocks go forward one hour from EST to EDT.
Does Adelaide Time change for daylight saving time?
Yes. Adelaide Time next changes on 4 Apr 2027, when clocks go back one hour from ACDT to ACST.
What is the best time for a meeting between EST and Adelaide Time?
EST and Adelaide Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 4:00 PM EST, which is 7:30 AM ACDT.
Is ET the same as EST?
EST is the winter (standard) name of Eastern Time (ET). From March to November the same clocks are called EDT. This converter always uses the one in force on the date you choose.
Related conversions
Convert Adelaide Time to EST
Convert EST to other time zones
Convert other time zones to Adelaide Time
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.