Event Start time difference 10 mints in a particular day it take 1 count

[kuldeepchoudhary]

Dear team,

i am attaching data.

in this different different dates & event start time given against main site id.

i need a macro for this when my time difference in event time <=10 than it will take as 1 incident for particular date.

for example

30-10-2005 10:02 abcd
30-10-2005 10.08 abcd
30-10-2005 10.10 abcd it will count 1
31-10-2005 10.02 abcd means count 2

your help is appreciated.

regards
kuldeep