EST/EDT to AST/ADT time converter

AST/ADT is 1 hour ahead of EST/EDT. When it is 9:00 AM in EST/EDT, it is 10:00 AM in AST/ADT.

EST/EDT EDT

Friday, October 16, 2026

AST/ADT ADT

Friday, October 16, 2026

EST/EDT
Eastern Standard Time
Fri, Oct 16
EDTUTC-4
AST/ADT
Atlantic Daylight Time
Fri, Oct 16
ADTUTC-3+1h
Finding your time zone…
Shared working hours (9:00–18:00)

EST/EDT to AST/ADT conversion table

Every hour of today in EST/EDT and the matching time in AST/ADT. Light rows are typical working hours (9:00–18:00).

EST/EDTAST/ADT
12:00 AM1:00 AM
1:00 AM2:00 AM
2:00 AM3:00 AM
3:00 AM4:00 AM
4:00 AM5:00 AM
5:00 AM6:00 AM
6:00 AM7:00 AM
7:00 AM8:00 AM
8:00 AM9:00 AM
9:00 AM10:00 AM
10:00 AM11:00 AM
11:00 AM12:00 PM
12:00 PM1:00 PM
1:00 PM2:00 PM
2:00 PM3:00 PM
3:00 PM4:00 PM
4:00 PM5:00 PM
5:00 PM6:00 PM
6:00 PM7:00 PM
7:00 PM8:00 PM
8:00 PM9:00 PM
9:00 PM10:00 PM
10:00 PM11:00 PM
11:00 PM12:00 AM+1 day

Best time to call or meet

Both sides are at work from 9:00 AM – 5:00 PM in EST/EDT (10:00 AM – 6:00 PM in AST/ADT).

Daylight saving time and the difference

The difference changes during the year because EST/EDT and AST/ADT switch clocks on different dates:

  • Oct 16, 2026 – Nov 1, 2026: +1h
  • Nov 1, 2026 – Nov 1, 2026: ±0
  • Nov 1, 2026 – Mar 14, 2027: +1h
  • Mar 14, 2027 – Mar 14, 2027: +2h
  • Mar 14, 2027 – Oct 16, 2027: +1h

More conversions

ADT to ESTEST to UTCEST to GMTEST to CSTEST to MSTEST to PSTEST to CETEST to MSKEST to GSTEST to PKTEST to ISTEST to SGTEST to PHT
UTC to ADTGMT to ADTCST to ADTMST to ADTPST to ADTCET to ADTMSK to ADTGST to ADTPKT to ADTIST to ADTSGT to ADTPHT to ADT

Questions and answers

What is the time difference between EST/EDT and AST/ADT?

AST/ADT is 1 hour ahead of EST/EDT.

What time is it in AST/ADT when it is 9 AM in EST/EDT?

When it is 9:00 AM in EST/EDT, it is 10:00 AM in AST/ADT.

When is the best time to call AST/ADT from EST/EDT?

Both sides are at work from 9:00 AM – 5:00 PM in EST/EDT (10:00 AM – 6:00 PM in AST/ADT).

Does the time difference between EST/EDT and AST/ADT change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.