What are the discount days for Gas stations?

Question

I was curious what days certain gas stations have those 5cents/gallon off discounts? I know Shell has theirs on Tuesdays. I'd like to know 1 for each day of the week :)

Answer 1

Wake up! That was back in the early ' 70s.

Answer 2

i didnt know they did this

Answer 3

Some stations have discount days on Wednesdays including Shell.  Others have done it on Thursdays.