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Convert Amazon Time to Atlantic Time

AMT · UTC−4 → AST · UTC−4

AMT and AST are the same time right now

Today Manaus is on UTC-4 (UTC−4) and Halifax on ADT (UTC−3), so right now Manaus is 1 hour behind Halifax.

Manaus · UTC-4

Wednesday, 7 October 2026

Halifax · ADT

Wednesday, 7 October 2026

When are both sides at work?

0003060912151821
ManausUTC-4 · -04:00
0003060912151821
HalifaxADT · -03:00
0104071013161922

Shared working hours: 09:00–17:00 in Manaus is 10:00–18:00 in Halifax.

Working (09–18) Awake, off the clock Asleep (23–07)

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07:24 Wed 7 Oct Manaus = 08:24 Wed 7 Oct Halifax

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Hour-by-hour conversion

Manaus (AMT)Halifax (AST)
00:0001:00
01:0002:00
02:0003:00
03:0004:00
04:0005:00
05:0006:00
06:0007:00
07:0008:00Now
08:0009:00
09:0010:00Both at work
10:0011:00Both at work
11:0012:00Both at work
12:0013:00Both at work
13:0014:00Both at work
14:0015:00Both at work
15:0016:00Both at work
16:0017:00Both at work
17:0018:00
18:0019:00
19:0020:00
20:0021:00
21:0022:00
22:0023:00
23:0000:00next day

About this conversion

AMT here means Amazon Time, represented by Manaus (America/Manaus), currently UTC−4. AST means Atlantic Time, represented by Halifax (America/Halifax), currently UTC−3.

AMT is used by 2 zones, including Brazil. If you meant a different one, see every meaning of AMT.

AST is used by 32 zones, including Canada. See every meaning of AST.

Working hours are shown as 09:00–18:00 local, and sleeping hours as 23:00–07:00. The hour table is anchored on the current day in Manaus; day boundaries are marked where the date differs.

Quick answers

  • 09:00 AMT is 10:00 AST
  • 12:00 AMT is 13:00 AST
  • 15:00 AMT is 16:00 AST
  • 18:00 AMT is 19:00 AST

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