My apology for making things not clear

I give you an example on what i want to achieve, let say today's date is 20140319 (based on format YYYYMMDD) i want to use this date to search the column date1 and date2 to find how many occurrence are there from each column and provide the total occurrences.

expected output is as following

column date1 = xx occurence

column date2 = xx occurence

__DATA__

input file

Student ID;date1;date2

13645722;20110327203202.0Z;20140211204731.0Z

14947374;20110327203202.0Z;20140220135320.0Z

15962660;20110327203156.0Z;20131106113716.0Z

17480884;20110327212821.0Z;20131211143804.0Z

13054554;20110327203141.0Z;20131205162959.0Z