There you go, m8.

Date of arrival Date of departure
Person 1 4/9/2011 11/13/2011
Person 2 10/11/2011 4/3/2012
Person 3 2/12/2012 2/18/2012
Person 4 11/29/2011 2/18/2012
Person 5 7/5/2012 9/1/2012
Person 6 9/11/2012 9/19/2012
Person 7 7/7/2012 7/30/2012
Person 8 12/22/2012 2/27/2012
Person 9 3/12/2012 4/19/2012
Person 10 1/14/2011 3/6/2011

Something like this. Hope it helps.

Hi,

To get difference in days, simply subtract the greater date with the lesser one, i.e. Departure Date - Arrival Date. Format it as General so that you see the number not a date. If you wanted working days use the NETWORKDAYS formula.

I didn't quite get your second query. How do you know if 2 people stayed on the same dates?

Hope it helps.

Prashant