I was chatting with my colleague about vacation time that he is currently getting with a German company and he admitted that six weeks was pretty good. However, back in the Soviet Union times he had thirty six days of vacation versus the German 30 days. I thought that number was a bit unusual only to find out that back then they used to work Monday through Saturday and so six days a week was the norm. Eventually things at his institute changed and the working week ended up being Monday through Friday but oddly enough the vacation was still calculated the same way.
So unbelievable it must be true