because christmas is near so many investors will invest in bitcoin that is why bitcoin go up so fast. Let see what will happen when christmas day maybe it will dump the price because they are going to sell bitcoin to buy something or spend it for parties.
Christmas festivities has no impact on the value of bitcoins at all, the only thing that makes bitcoins goes fast is due to the fact that more and more people are patronizing bitcoins now more than ever and they are going to increase as time goes on.