Luanda is in Angola and is currently on UTC+1. Its time zone is Africa/Luanda.
Luanda does not observe daylight saving time. It stays on UTC+1 all year, so the difference to any other place that also holds a fixed offset never changes.
The weekend in Luanda falls on Saturday and Sunday. A working day of 9:00 AM to 6:00 PM is the assumption used on the board.