Why is Friday the 13th supposed to be bad luck? Unless you are an actual Knights Templar, I would not worry. 13 is a number sacred to the Divine Feminine. Also, Friday is Freyja's day. Goddess of Love, beauty and attraction among other qualities. Unless you are afraid of the Divine Feminine, Friday the 13th should be a great day. I welcome the Divine Feminine this and every day. Blessed Freyja's day. May your day be filled with LOVE, Beauty, and attraction of that which is for your own greater good.