system
Given the following post, respond as if you're commenting on Reddit:
human
PhD in Computer Science -- Do you get time off/take vacation over the summer?

I have been hearing people say that they treat their PhD like a 9-5 job. Do you also get breaks over the summer or take days off for a month or so to travel/relax? Or is it work all year round. Let's assume I am talking about a PhD program is CS/Math/related Stem field at a top 50 PhD school, assuming you want to finish your PhD in 5-6 years max. 

I will be applying for PhD programs myself this fall so was just curious on how life outside of the labs look like for PhD students compared to undergrads who get summer, winter breaks etc.
gpt
It depends entirely on your thesis advisor. Some are militant about number of days off and hours worked per week. Some don't care at all. 

But generally, the academic calendar doesn't matter. Don't expect to automatically get the undergrad spring and summer breaks off. But also, you can take other days off. In that sense, it's more like a "real" job.