Given that the Earth orbits the Sun, I would expect it to swap every half a year. For one half of the year, the Sun should be ever so slightly closer to Voyager

Given that the Earth orbits the Sun, I would expect it to swap every half a year. For one half of the year, the Sun should be ever so slightly closer to Voyager 1 than the Earth, and the other half of the year the opposite should be true. However, considering that the Earth and the Sun are no more than ten light-minutes away from each other, I shouldn't think this would make much difference to our festivities :)