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Convert Acre Time to Atlantic Time

ACT · UTC−5 → AST · UTC−4

ACT is 1 hour behind AST

Today Rio Branco is on UTC-5 (UTC−5) and Halifax on ADT (UTC−3), so right now Rio Branco is 2 hours behind Halifax.

Rio Branco · UTC-5

Wednesday, 7 October 2026

Halifax · ADT

Wednesday, 7 October 2026

When are both sides at work?

0003060912151821
Rio BrancoUTC-5 · -05:00
0003060912151821
HalifaxADT · -03:00
0205081114172023

Shared working hours: 09:00–16:00 in Rio Branco is 11:00–18:00 in Halifax.

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

Pick a time and share it

06:23 Wed 7 Oct Rio Branco = 08:23 Wed 7 Oct Halifax

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Hour-by-hour conversion

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

About this conversion

ACT here means Acre Time, represented by Rio Branco (America/Rio_Branco), currently UTC−5. AST means Atlantic Time, represented by Halifax (America/Halifax), currently UTC−3.

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 Rio Branco; day boundaries are marked where the date differs.

Quick answers

  • 09:00 ACT is 11:00 AST
  • 12:00 ACT is 14:00 AST
  • 15:00 ACT is 17:00 AST
  • 18:00 ACT is 20:00 AST

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