Excel formula to calculate intersected dates? -


i searched through internet , came nothing. have 2 tables. 1 includes work dates , other has vacation dates. have find intersected dates.

let me give example;

work table

1|     |      b             |       c          |          d 2|person |    work start date | work finish date |intersected vacations 3|mike   |         01.08.2013 |       10.08.2013 |1  (needed find) 4|john   |         16.08.2013 |       25.10.2013 |3  (needed find)

vacations table

1|a      |b                   |c 2|person |vacation start date |vacation end date 3|mike   |         05.08.2013 |       05.08.2013 4|john   |         20.09.2013 |       21.09.2013 5|john   |         01.10.2013 |       01.10.2013

so, need excel formula calculate vacations between work days.

assuming counting days within periods, including saturdays , sundays can use "array formula" per screenshot below:

formula follows in d3:

=sum(if(a$8:a$10=a3,if(c$8:c$10>=b3,if(b$8:b$10<=c3,if(c$8:c$10>c3,c3,c$8:c$10)-if(b$8:b$10<b3,b3,b$8:b$10)+1))))

confirmed ctrl+shift+enter , copied down d4

this may overkill small example i'm assuming real data larger - solution can extended required, multiple unsorted vacation periods

enter image description here


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