Accra to AST

Understanding the -4h Gap: Accra vs AST

Accra runs on Greenwich Mean Time (GMT) at UTC+00:00. AST runs on Atlantic Standard Time (AST) at UTC-04:00. That puts Accra 4 hours behind AST — a difference of -4h at the current offsets.

In practice, when it is 9:00 AM in Accra it is 5:00 AM in AST. Midnight in Accra is 8:00 PM in AST. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Accra to AST time conversion table

About GMT (Greenwich Mean Time)

Greenwich Mean Time (GMT) is the clock time at the Royal Observatory in Greenwich, London, which sits on the Prime Meridian (0° longitude). GMT serves as the reference point from which all other time zones are calculated. The United Kingdom uses GMT during winter months and switches to British Summer Time (BST, UTC+01:00) from late March to late October. Several West African nations use GMT year-round. GMT is often used interchangeably with UTC (Coordinated Universal Time), although technically they are different – UTC is based on atomic clocks while GMT is based on Earth's rotation.

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 Accra and AST

Both Accra and AST sit inside the 9 AM – 5 PM working day between 1:00 PM–5:00 PM GMT, which is 9:00 AM–1:00 PM AST. That gives roughly 4 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

Accra and AST overlap for about 4 hours during the working day — enough for meetings if you avoid the edges of the window.