A family of Microsoft relational database management systems designed for ease of use.
Ahmet,
What you are seeking is called a hammock task. Details on setting it up are described in this Wiki article.
https://social.technet.microsoft.com/wiki/contents/articles/32040.ms-project-hammock-tasks.aspx
There is no reason to set your milestones as manually scheduled, simply enter the desired date into the Start field of the milestone of an auto-scheduled task. By default, milestones occur at the normal start time which is 8:00 AM. If you want the first milestone to be at normal start time but the finish milestone to be at the normal finish time (5:00 PM), you need to pick a display date format, (File > options > general group), that includes the time and then manually set the finish time.
This screen shot shows an example of the scenario your describe (I manually adjusted the M2 milestone finish time to 5:00 PM).
Hope this helps.
John