| Parameter | Mand | Type | Default | Constraints |
| t0 | yes | string | ||
|
Starting time, e.g. 1998-11-25T17:21:00.
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| arg | no | string | dt | dt|t1 |
|
determines the second argument. If 'dt', the time 'dt' will be added to t0 and the result is printed. If 't1', the difference between t0 and t1 is printed.
| ||||
| dt | no | real | ||
|
time interval, possibly negative, in seconds.
| ||||
| t1 | no | string | ||
|
end time, e.g. 2000-01-01T00:00:00
| ||||
| Parameter | Mand | Type | Default | Constraints |