I just love yoga, I chose to do it once a week on Tuesdays.
According to most calendars, that's the 3rd day of the week, with the week starting on Sunday.  But I think many of us see it as the 2nd day of the week.
I think so too, nowadays week usually starts on Monday. And Yoga is so relaxing, perfect for beginning of the week.
It seems that yoga originated in ancient India - do you practice a certain type?