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GlobalTimeCompare

ACST to UTC Converter

Turn a Northern Territory Time reading into Coordinated Universal Time. The panels show both clocks live, and the roller lets you line up any ACST time against its UTC equivalent.

SELECT COUNTRY / TIME ZONE

SELECT SECOND COUNTRY / TIME ZONE

SELECTED COUNTRY
🇦🇺

Australia (Darwin)

Northern Territory Time

04:56:44
ACST
Sun, 04 Oct 2026UTC +09:30
REFERENCE CLOCK
🌐

UTC

Coordinated Universal Time

19:26:44
UTC
Sat, 03 Oct 2026UTC +00:00
SECOND COUNTRY
🇺🇸

United States (Eastern)

US Eastern Time

15:26:44
ET
Sat, 03 Oct 2026UTC -04:00

THE CLOCKS ABOVE ALWAYS SHOW THE LIVE CURRENT TIME. THE ROLLER BELOW IS A LOOKUP TOOL — ROTATING IT NEVER CHANGES THEM.

Choose a UTC date and time

Enter any minute for a past or future date. Results use the timezone rules for that moment; the clocks above stay live. The roller moves in 30-minute steps from your selection.

UTC ↔ ACST ↔ ET INTERACTIVE ROLLER

DRAG · SCROLL · SWIPE
ACSTUTCET
▶◀
09:30
10:00
10:30
11:00
11:30
12:00
12:30
13:00
13:30
14:00
14:30
15:00
15:30
16:00
16:30
17:00
17:30
18:00
18:30
19:00
19:30
20:00
20:30
21:00
21:30
22:00
22:30
23:00
23:30
00:00
00:30
01:00
01:30
02:00
02:30
03:00
03:30
04:00+1 DAY
04:30+1 DAY
05:00+1 DAY
05:30
06:00
06:30
07:00
07:30
08:00
08:30
09:00
00:00
00:30
01:00
01:30
02:00
02:30
03:00
03:30
04:00
04:30
05:00
05:30
06:00
06:30
07:00
07:30
08:00
08:30
09:00
09:30
10:00
10:30
11:00
11:30
12:00
12:30
13:00
13:30
14:00
14:30
15:00
15:30
16:00
16:30
17:00
17:30
18:00
18:30
19:00
19:30
20:00
20:30
21:00
21:30
22:00
22:30
23:00
23:30
20:00
20:30
21:00
21:30
22:00
22:30
23:00
23:30
00:00
00:30
01:00
01:30
02:00
02:30
03:00
03:30
04:00
04:30
05:00
05:30
06:00
06:30
07:00
07:30
08:00
08:30
09:00
09:30
10:00
10:30
11:00
11:30
12:00
12:30
13:00
13:30
14:00
14:30
15:00
15:30
16:00
16:30
17:00
17:30
18:00
18:30
19:00
19:30

UTC reference date: Sat, 03 Oct 2026. The roller wraps within this date.

ROLLER SELECTION

Offsets below apply to the selected time.

SELECTED TIMES
ACST 04:30 (+1d)

Sun, 04 Oct 2026

UTC 19:00

Sat, 03 Oct 2026

ET 15:00

Sat, 03 Oct 2026

OFFSETS & DAY
NEXT DAY
ACST UTC +09:30
ET UTC -04:00
UTC +00:00
TIME DIFFERENCE AT SELECTED TIME

ACST is 9 hours 30 minutes ahead of UTC

ET is 4 hours behind UTC

UTC +09:30
UTC +00:00
UTC -04:00

Australia (Darwin) is 13 hours 30 minutes ahead of United States (Eastern)

🇦🇺 AUSTRALIA (DARWIN)
12369
ACST · 04:56:44
🌐 UTC
12369
UTC · 19:26:44
🇺🇸 UNITED STATES (EASTERN)
12369
ET · 15:26:44

TIME RELATIONSHIP MAP

UTCACSTET
LIVE

This hourly table is for today in UTC. Use the converter above to choose a different date or an exact minute.

24-HOUR ACST → UTC REFERENCE (UTC DATE: 2026-10-03)
ACSTUTCLocal date
09:3000:00Sat, 03 Oct 2026Same day
10:3001:00Sat, 03 Oct 2026Same day
11:3002:00Sat, 03 Oct 2026Same day
12:3003:00Sat, 03 Oct 2026Same day
13:3004:00Sat, 03 Oct 2026Same day
14:3005:00Sat, 03 Oct 2026Same day
15:3006:00Sat, 03 Oct 2026Same day
16:3007:00Sat, 03 Oct 2026Same day
17:3008:00Sat, 03 Oct 2026Same day
18:3009:00Sat, 03 Oct 2026Same day
19:3010:00Sat, 03 Oct 2026Same day
20:3011:00Sat, 03 Oct 2026Same day
21:3012:00Sat, 03 Oct 2026Same day
22:3013:00Sat, 03 Oct 2026Same day
23:3014:00Sat, 03 Oct 2026Same day
00:3015:00Sun, 04 Oct 2026Previous day in UTC
01:3016:00Sun, 04 Oct 2026Previous day in UTC
02:3017:00Sun, 04 Oct 2026Previous day in UTC
03:3018:00Sun, 04 Oct 2026Previous day in UTC
04:3019:00Sun, 04 Oct 2026Previous day in UTC
05:3020:00Sun, 04 Oct 2026Previous day in UTC
06:3021:00Sun, 04 Oct 2026Previous day in UTC
07:3022:00Sun, 04 Oct 2026Previous day in UTC
08:3023:00Sun, 04 Oct 2026Previous day in UTC

What is ACST to UTC?

Northern Territory Time is the local clock in Darwin. Converting it to UTC removes the local offset so the time can be shared with anyone in the world without ambiguity — which is exactly why UTC is used for servers, aviation and international scheduling.

The Northern Territory keeps its half-hour offset throughout the year, unlike Adelaide. Select the city rather than assuming all of Australia shares one clock.

How to convert ACST to UTC

Subtract the current offset shown in the offset panel from the local ACST time. If the result goes below 00:00, UTC is still on the previous date. Use the roller to read the pairing directly instead of doing the arithmetic.

ACST has no daylight saving changes, so the offset to UTC is stable all year. It is still calculated live from the Australia/Darwin IANA database rather than hard-coded.

When ACST and UTC fall on different dates

Early-morning or late-night local times frequently sit on a different UTC date. The converter labels every selection as SAME DAY, NEXT DAY or PREVIOUS DAY so a deadline written in UTC is never off by 24 hours.

Does ACST change for daylight saving time?

Darwin stays at UTC +09:30 and does not observe daylight saving time.

Frequently Asked Questions

How do I convert ACST to UTC quickly?
Read the live offset above and subtract it from your local time — or scroll the roller until the ACST drum shows the time you care about and read the UTC drum beside it.
Why do developers store timestamps in UTC?
UTC has no daylight saving jumps and no regional variation, so a UTC timestamp means the same instant everywhere. Local time is applied only when the value is displayed.
Is ACST the same all year?
Yes — Darwin does not use daylight saving time, so the offset from UTC is constant.