how to group rows by date

i have this data

i want to group\sort them to be something like this:

how i can do this ?

Answer 1

[Andrei Bobrov]

[~,~,z] = xlsread('20150523.xlsx');
c = z(cellfun('isempty',regexp(z,'\')));
[y,~] = datevec(c);
[~,~,c0] = unique(y);
c1 = accumarray(c0,(1:numel(c0))',[],@(ii){c(ii)});
c2 = [c1,repmat({{[]}},size(c1))]';
out = cat(1,c2{1:end-1});
xlswrite('20150523.xlsx',out,1,'B1')

[Amr Hashem]

it works...thanks

[Andrei Bobrov]

corrected

[Amr Hashem]

Thanks... its amazing