How to Convert the Time From GMT to AST
- 1). Add three hours when converting time from GMT to AST in winter, and add two hours in the summer. If it is 3 p.m. in London, it is 6 p.m. in Saudi Arabia during the winter and 5 p.m. during the summer.
- 2). Subtract three hours when converting time from AST to GMT in the winter, and subtract two hours in the summer. If it is 3 p.m. in Saudi Arabia, it is noon in London during the winter and 1 p.m. in the summer.
- 3). When traveling from the GMT zone to a country in the AST zone, change the time on your watch accordingly; cell phone and computer clocks typically adjust automatically when you move into a new time zone.
