Start Date for PhD programs?

[Bopie5]

This is maybe a dumb question, but I can't seem to find the answer either on this forum or through googling.

What dates do PhD programs usually start? I assume August, but does anyone have any info on whether programs start early or late August, or at some other time? Or does it just depend on the program?

[MarineBluePsy]

In general programs that only accept students in the Fall start whenever the Fall semester or quarter begins, which could be August or September.  Earlier start dates may be required depending on how the student is funded (for example a TA or RA position that starts in the summer) or there are mandatory classes or trainings in the summer.  

[Warelin]

It really depends on the program. Some programs have orientation that could last a day; others could last for weeks. 

If you google the college's academic calendar, it's likely that you can expect to start around then. Mid/Late August is the most common start date. This is more likely to be different if the school is on a Trimester or Quarter system rather than a Semester system though.