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Convert Chatham Time to India Time

CHAST · UTC+12:45 → IST · UTC+5:30

CHAST is 7 hours 15 minutes ahead of IST

Today Chatham is on CHADT (UTC+13:45) and Mumbai on IST (UTC+5:30), so right now Chatham is 8 hours 15 minutes ahead of Mumbai.

Chatham · CHADT

Thursday, 8 October 2026

Mumbai · IST

Wednesday, 7 October 2026

When are both sides at work?

0003060912151821
ChathamCHADT · +13:45
0003060912151821
MumbaiIST · +05:30
1518210003060912

Shared working hours: 17:30–18:00 in Chatham is 09:15–09:45 in Mumbai.

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

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01:11 Thu 8 Oct Chatham = 16:56 Wed 7 Oct Mumbai

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Hour-by-hour conversion

Chatham (CHAST)Mumbai (IST)
00:0015:45prev. day
01:0016:45prev. dayNow
02:0017:45prev. day
03:0018:45prev. day
04:0019:45prev. day
05:0020:45prev. day
06:0021:45prev. day
07:0022:45prev. day
08:0023:45prev. day
09:0000:45
10:0001:45
11:0002:45
12:0003:45
13:0004:45
14:0005:45
15:0006:45
16:0007:45
17:0008:45
18:0009:45
19:0010:45
20:0011:45
21:0012:45
22:0013:45
23:0014:45

About this conversion

CHAST here means Chatham Time, represented by Chatham (Pacific/Chatham), currently UTC+13:45. IST means India Time, represented by Mumbai (Asia/Kolkata), currently UTC+5:30.

IST is used by 3 zones, including India. See every meaning of IST.

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 Chatham; day boundaries are marked where the date differs.

Quick answers

  • 09:00 CHAST is 00:45 IST
  • 12:00 CHAST is 03:45 IST
  • 15:00 CHAST is 06:45 IST
  • 18:00 CHAST is 09:45 IST

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