Why should the dining table turntable turn clockwise

Dining table turntable turntable clockwise slow turn in the party dinner, often encountered with a round table with turntable, if the meal has the difference between the eldest and youngest, a dish just come up, should be turned to the master, the guest of honor, honored in front, to be enjoyed by the others after the slow turntable. And, the turntable should turn clockwise, do not rotate quickly, this is a provision, if there is no provision for you to go against me, the disk does not turn