Kathmandu is in Nepal and is currently on UTC+5:45. Its time zone is Asia/Kathmandu.
Kathmandu does not observe daylight saving time. It stays on UTC+5:45 all year, so the difference to any other place that also holds a fixed offset never changes.
The weekend in Kathmandu falls on Saturday. A working day of 9:00 AM to 6:00 PM is the assumption used on the board.