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Convert Acre Time to Greenwich Mean Time

ACT · UTC−5 → GMT · UTC+0

ACT is 5 hours behind GMT

Today Rio Branco is on UTC-5 (UTC−5) and London on BST (UTC+1), so right now Rio Branco is 6 hours behind London.

Rio Branco · UTC-5

Wednesday, 7 October 2026

London · BST

Wednesday, 7 October 2026

When are both sides at work?

0003060912151821
Rio BrancoUTC-5 · -05:00
0003060912151821
LondonBST · +01:00
0609121518210003

Shared working hours: 09:00–12:00 in Rio Branco is 15:00–18:00 in London.

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

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06:23 Wed 7 Oct Rio Branco = 12:23 Wed 7 Oct London

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Hour-by-hour conversion

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

About this conversion

ACT here means Acre Time, represented by Rio Branco (America/Rio_Branco), currently UTC−5. GMT means Greenwich Mean Time, represented by London (Europe/London), currently UTC+1.

GMT is used by 22 zones, including United Kingdom. See every meaning of GMT.

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 15:00 GMT
  • 12:00 ACT is 18:00 GMT
  • 15:00 ACT is 21:00 GMT
  • 18:00 ACT is 00:00 GMT

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