| duration (BC-SRV-ASF) |
A timeframe between two points in time that consists of a number value and a time unit.
The number value does not have any defined meaning without the time unit. Different durations, such as a second, a day, a month, or a year, cannot simply be converted from one to the other. The duration always has a local reference, that is, it has a reference object via which the time zone and the calendar can be determined.