How can be resolved two variable at once

[Julian_prince]

i am having two differnt file, both file having no and time , i want to make programme that when, number and tiome is same in both file give that index onle  in , i am going to attached the file

[Julian_prince]

How to use two case struture at once,,,,,

i have attache two excel filenamed Rinex and sp3,  and i want to make programme that when,

Rinex column -0 is equal to sp3 column -0,  where column 0 having the numbers,,

and

Rinex column -2 is equal to sp3 column 2, in output array give me only those index only,,,