I might use a format similar to this one for my entries:
13/6/04 - Gained the second position over my school (3rd prep).
7/6/05 - Finished exams of first secondary 2005.
12/6/05 - Gained the fifth position over my school.
14/6/05 - My birthday No 15.
15/7/05 - Started the trainings of football with my new coach(Cap.Mohammed Mostafa).
11/6/06 - The begining of the general secondary certificate exams (Arabic Exam).
14/6/06 - Birthday no 16.
1/7/06 - Biology final exam and the summer vacation 2006.
5/7/06 - A Journey with my friends to the north coast from 5-7 till 13-7 (El Mohandeseen el gameyeen Resort).
15/7/06 - Results of general secondary certificate AND I`ve got 96%.
17/7/06 - Start the trainings of the new year 2006-2007.