You need to specify the year
7th March 1979 was a Wednesday.
March 7th 1950 was on a Tuesday.
March 7th 1997 was a Friday.
7th March 1995 was a Tuesday.
Saturday is the seventh day of the week.
In English, "Saturday" is the seventh day of the week. There is no other answer. "Friday" is the last day of the "work week", but a "work week" is only five days.
The week culminates in the seventh day, the Holy Shabbat (shabbat kodesh, abbreviated ).
A day is one seventh of a week.
Pancake Day, also called Shrove Tuesday, always falls on a Tuesday, the day before Ash Wednesday (which is the beginning of Lent and the seventh Wednesday before Easter).
It was a Wednesday.
Tuesday
Thursday.