I have two sets of data with different dates
and I want excel to automatically sort the data in date order.

e.g here is an example of the data I have

A B C D

16-Apr-13 200 29-Apr-13 200

09-Jul-13 190 29-Jul-1 190

01-Oct-13 170 29-Oct-13 180

24-Dec-13 100 29-Jan-14 170

18-Mar-14 90 29-Apr-14 160

In the example, chronological order is:
A1,C1,A2,C3,A3,C3, ...
Is this always the case?