 because they have less than 1,000th the effect. Jupiter and Venus have about 1,000th the gravitational effect that the moon has. So then what about these people that talk about when all the planets align? It means nothing. It means nothing. The Jupiter effect is ineffectual, and it was shown to be so back in, what, 84, whenever that was supposed to be. But the big Alaskan quake, the 8.4, on Good Friday of 1964, was on the day of the full moon.