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Convert Australian Central Time to Chatham Time

ACST · UTC+9:30 → CHAST · UTC+12:45

ACST is 3 hours 15 minutes behind CHAST

Adelaide · ACDT

Wednesday, 7 October 2026

Chatham · CHADT

Thursday, 8 October 2026

When are both sides at work?

0003060912151821
AdelaideACDT · +10:30
0003060912151821
ChathamCHADT · +13:45
0306091215182100

Shared working hours: 09:00–15:00 in Adelaide is 12:15–18:15 in Chatham.

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

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21:53 Wed 7 Oct Adelaide = 01:08 Thu 8 Oct Chatham

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Hour-by-hour conversion

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

About this conversion

ACST here means Australian Central Time, represented by Adelaide (Australia/Adelaide), currently UTC+10:30. CHAST means Chatham Time, represented by Chatham (Pacific/Chatham), currently UTC+13:45.

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

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 Adelaide; day boundaries are marked where the date differs.

Quick answers

  • 09:00 ACST is 12:15 CHAST
  • 12:00 ACST is 15:15 CHAST
  • 15:00 ACST is 18:15 CHAST
  • 18:00 ACST is 21:15 CHAST

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