find a value in a vector of type char

i have vector composed from date and time for exemple:

    % 
 date_time=[date time]
  date_time=['06.09.2010' '1:18.25']
date is a 40000*1 cell
time is a 40000*1 cell

how could i find the index of a time_date= '7.5.2012' '2:20:59' with the function find or any other function?

thank you

[Jan]

Are you looking for '7.5.2012' '2:20:59', while the data contain '07.07.2012' '02:20:59'? Using leading zeros would be a marvelous idea obviously.

Answer 1

[Andrei Bobrov]

ismember(data_time,{'7.5.2012' '2:20:59'},'rows');

Answer 2

[Walter Roberson]

strfind