A quick fix is to format your inputs as day/time;
19/04/00 22:00
20/04/00 02:00
should give a result (4:00)
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'I may disagree with what you have to say, but I will defend, to the death, your right to say it' - Voltaire
[This message has been edited by jfe117 (edited 19 April 2000).]