Today is Friday, 97 times the power of 97, what day is it?

Today is Friday, 97 times the power of 97, what day is it?

97 mod 7= -1
97^2 mod 7= 1
97^3 mod 7= -1
97^4 mod 7= 1
97^97 mod 7= -1
Namely
97^97 mod 7= 6
Today is Friday, after 97, it's Friday + 6 = Thursday