please help me to find a formula to calculate overlaping times by day
01/01/2014 10:00 10:30
01/01/2014 11:00 12:00 -----overlap 11:00 11;30
01/01/2014 11:00 11:30 -----
01/01/2014 12:00 14:00
01/01/2014 15:00 18:00 ------------overlap 16:00 17:00
01/01/2014 16:00 17:00 ------------
02/01/2014 22:00 23:00
thaks for any help in advance
02/01/2014
02/01/2014
02/01/2014
02/01/2014
02/01/2014
02/01/2014
02/01/2014
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