Hello, I have a date format which looks as follows: 04.10.2011 01:33:39 Now suppost I have two observations. one at the above mentioned data and time and the second after 30 seconds: i.e. 04.10.2011 01:34:09 What formula should I use the calcuate the differnece between the two measurement dates ? I also tried, data differnce, it doesn't seem to work for this date format ? Kind Regards
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