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SAST to AST

-6h

SAST

SASTSOURCE
UTC+02:00
HH12
:
MM00
  
12:00 (24-hr)
12 AM6 AM12 PM6 PM12 AM

AST

AST
UTC-03:00☀ DST active
HH06
:
MM00
  
06:00 (24-hr)
12 AM6 AM12 PM6 PM12 AM
SAST
AST
12:00 AM
7:00 PM-1
2:00 AM
9:00 PM-1
4:00 AM
11:00 PM-1
6:00 AM
1:00 AM
8:00 AM
3:00 AM
10:00 AM
5:00 AM
12:00 PM
7:00 AM
2:00 PM
9:00 AM
4:00 PM
11:00 AM
6:00 PM
1:00 PM
8:00 PM
3:00 PM
10:00 PM
5:00 PM

Green rows indicate typical business hours (9 AM - 5 PM)

SAST and AST on the World Map

The map below highlights the SAST (South Africa Standard Time) and AST (Atlantic Standard Time) timezone regions across the globe.

SASTASTJohannesburgCape TownDurbanPretoriaHalifaxSan JuanSanto DomingoCaracas
SAST Zone
→
AST Zone

Explore all world timezones interactively →

SAST – South Africa Standard Time

UTC+02:00

South Africa Standard Time (SAST) is the time zone for South Africa and neighboring countries, 2 hours ahead of UTC.

Countries in SAST
South AfricaLesothoEswatini
Major Cities in SAST
JohannesburgCape TownDurbanPretoriaPort Elizabeth
Key Facts about SAST
  • •South Africa does not observe daylight saving time.
  • •SAST is the same offset as EET and Israel Standard Time.
  • •The Johannesburg Stock Exchange (JSE) is Africa's largest.
Daylight Saving:No – UTC+02:00 year-round
Learn more about SAST on Wikipedia

AST – Atlantic Standard Time

UTC-04:00

Atlantic Standard Time (AST) is the time zone for the Canadian Atlantic provinces and the Caribbean, 4 hours behind UTC.

Countries in AST
Canada (Atlantic provinces)Puerto RicoUS Virgin IslandsDominican RepublicVenezuelaBoliviaBarbadosTrinidad and Tobago
Major Cities in AST
HalifaxSan JuanSanto DomingoCaracasLa PazFrederictonCharlottetown
Key Facts about AST
  • •Puerto Rico uses AST year-round and does not observe DST.
  • •AST is 1 hour ahead of EST.
  • •Halifax, the capital of Nova Scotia, is the largest city in AST Canada.
Daylight Saving:Yes – switches to ADT
Learn more about AST on Wikipedia

Comparing Time Zones: SAST and AST

SAST runs on South Africa Standard Time (SAST) at UTC+02:00. AST runs on Atlantic Standard Time (AST) at UTC-04:00. That puts SAST 6 hours behind AST — a difference of -6h at the current offsets.

In practice, when it is 9:00 AM in SAST it is 3:00 AM in AST. Midnight in SAST is 6:00 PM in AST. Neither zone observes daylight saving time, so the offset between them stays constant all year.

SAST to AST time conversion table

SAST (SAST)AST (AST)Day
12:00 AM6:00 PMprevious day
6:00 AM12:00 AMsame day
7:00 AM1:00 AMsame day
8:00 AM2:00 AMsame day
9:00 AM3:00 AMsame day
12:00 PM6:00 AMsame day
3:00 PM9:00 AMsame day
5:00 PM11:00 AMsame day
6:00 PM12:00 PMsame day
9:00 PM3:00 PMsame day

Why people convert SAST to AST time

  • Scheduling a call from SAST to AST: a 10:00 AM start in SAST lands at 4:00 AM in AST, so you can confirm the slot without doing the arithmetic yourself.
  • Finding shared working hours: both SAST and AST are inside the 9-to-5 working day between 3:00 PM and 5:00 PM SAST time (9:00 AM–11:00 AM AST). That is roughly 2 hours of usable overlap.
  • Coordinating a SAST-based team with AST contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
  • Always state the zone abbreviation, not just the hour. "3:00 PM SAST" is unambiguous; "3 PM" across a -6h gap is not.
  • Block 3:00 PM–5:00 PM SAST as the recurring meeting window if you work primarily from SAST and need AST colleagues present.

About SAST (South Africa Standard Time)

South Africa Standard Time (SAST) is used in South Africa, Lesotho, and Eswatini. SAST does not observe daylight saving time. Johannesburg and Cape Town are major economic hubs in Africa.

About AST (Atlantic Standard Time)

Atlantic Standard Time (AST) covers Canada's Atlantic provinces (Nova Scotia, New Brunswick, Prince Edward Island, and most of Labrador), as well as several Caribbean nations. Puerto Rico and the US Virgin Islands use AST year-round without daylight saving time. The Canadian provinces switch to Atlantic Daylight Time (ADT) in summer.

Best time to call between SAST and AST

Both SAST and AST sit inside the 9 AM – 5 PM working day between 3:00 PM–5:00 PM SAST, which is 9:00 AM–11:00 AM AST. That gives roughly 2 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

SAST and AST overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.

SAST is 6 hours behind AST (SAST UTC+02:00 → AST UTC-04:00). The shared working window is 3:00 PM–5:00 PM SAST. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

SAST

Does not observe DST

AST

☀ Currently in DST

Standard: UTC-04:00 · DST: UTC-03:00

Clocks fall back on Sun, Nov 1, 2026

Learn More About Time

Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:

⏳
History of Timekeeping
From sundials to atomic clocks - 5000 years of measuring time
🌍
How Time Zones Work
UTC, offsets, and why zones don't follow straight lines
☀️
Daylight Saving Time
DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between SAST and AST?

SAST (SAST, UTC+02:00) is 6 hours behind AST (AST, UTC-04:00). The gap is currently -6h.

How do I convert SAST time to AST time?

Add -6h to SAST local time. For example, 9:00 AM in SAST is 3:00 AM in AST.

What time is it in AST right now?

AST uses AST at UTC-04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -6h offset from SAST.

What is the best time to call AST from SAST?

Call between 3:00 PM and 5:00 PM SAST — that maps to 9:00 AM–11:00 AM AST and keeps both parties inside the working day.

Which is behind, SAST or AST?

SAST is 6 hours behind AST. When it is 12:00 PM in SAST it is 6:00 AM in AST.

Does daylight saving time affect the SAST–AST difference?

Neither zone observes daylight saving time, so the -6h offset between SAST and AST is fixed all year.

Which other cities share SAST's time zone?

SAST also covers Johannesburg, Cape Town, Durban, Pretoria, Port Elizabeth.

Which countries use SAST, SAST's zone?

SAST is used in South Africa, Lesotho, Eswatini.

Is there a day difference between SAST and AST?

Not normally. The -6h gap only pushes the date over the previous day.

What is the time difference between SAST and AST?

AST is -6h from SAST.

What timezone is SAST in?

SAST operates on its local timezone.

What timezone is AST in?

AST operates on its local timezone.

Which countries use SAST (South Africa Standard Time)?

SAST is used in South Africa, Lesotho, Eswatini.

Does SAST observe daylight saving time?

No, SAST does not observe daylight saving time and remains at UTC+02:00 year-round.

What are some interesting facts about SAST?

South Africa does not observe daylight saving time. SAST is the same offset as EET and Israel Standard Time.

Which cities are in the AST timezone?

Major cities in the AST timezone include Halifax, San Juan, Santo Domingo, Caracas, La Paz, Fredericton, Charlottetown.

What is the UTC offset for AST?

Atlantic Standard Time (AST) is at UTC-04:00. During daylight saving time, it shifts to ADT.

What should I know about the AST timezone?

Puerto Rico uses AST year-round and does not observe DST. AST is 1 hour ahead of EST.

When is it midnight in SAST, what time is it in AST?

When it is 12:00 AM (midnight) in SAST (SAST), it is -6h later in AST (AST).

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sast→johannesburgsast→south africasast→new yorksast→londonast→halifaxast→new yorkast→londonast→dubai

More SAST time conversions

See every conversion from SAST →·See every conversion from AST →

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