A galvanic cell is constructed using SHE and another electrode 'X' under standard conditions.  'X' in this cell is the negative electrode then 'X' is

SRP value of Copper, Silver and Chlorine electrodes is positive. SRP of Hydrogen electrode is zero;SRP value of Zinc electrode is negative; So when connected to SHE spontaneous oxidation occurs at Zn electrode, Zn electrode is anode or negative electrode.