Method: June 29th on Gregorian calendar If Tuesday move to previous Monday (-1 day) If Wednesday move to previous Monday (-2 days) If Thursday move to previous Monday (-3 days) If Friday move to following Monday (+3 days)
Method: October 12th on Gregorian calendar If Tuesday move to previous Monday (-1 day) If Wednesday move to previous Monday (-2 days) If Thursday move to previous Monday (-3 days) If Friday move to following Monday (+3 days)