I will show you what happens if you change default start time in MS PROJECT 2013, and how to get right Project Start date. First I will set Date format so I can see hours. Click on File Tab, then choose Options:
Now I am going to create new Project:
and I’m going to File Tab again, and I will choose Options, and then:
Ok, so I want that First Project Task starts at 07:30 in the morning. I am going to change working time:
Ok, now I will add two Tasks:
As you can see, Task 1 is going to start at Monday 08:00, and finish at Thursday, 18.6.2015 at 08:00, and Task 2 is going to start at same Thursday as well, and it will be finished at Monday, 22.6.2015 at 08:00. Why? Why does not my Task 1 start at 07:30? Because I didn’t change the Project Start time, and you can see it here:
I will change it now:
and I will get:
Everything is Perfect now! What if I set up that my Default start time is at 09:00 instead of 7:30, and Default end Time is 17:00 instead of 16:00, and I set up working time in calendar according to this? When I add first Task to the Project, this new Task, and the Project start time will be at 09:00 instead of 07:30! If you do not believe me, try it.
So, to conclude, if you change your Project start time earlier than it was set up before, change your Project start time as well. And, btw, check your Project Start time in any new Project, just to be sure that it will start when it is supposed to start.