You thought of meeting your date in the same place you first met? Well think again, you will never be at the same place ever again.
Firstly, Earth is rotating. You can argue that within a day, your position on the Earth relative to the sun will be the same after about 24 hours (1 day).
Well, then the Earth is orbiting the sun. You can now argue that in a year, the Earth will be at the same position, with respect to the sun.
Well, but the Solar system itself is moving through space. It is orbiting the centre of the Milky Way galaxy at about 828,000 km/h. With some calculations, you might argue that within 250 million years, the Solar System would be in exactly the same position as today, with respect to the centre of the Milky Way galaxy, also known as the Galactic Year, as shown below.Your argument of orbit’s runs out here. There is a region in the universe, called as ‘The Great Attractor’, which has a mass of thousands of times that of our Milky Way galaxy, and because of this, it seems to attract galaxies even millions of light years from it! With respect to the Great Attractor, we are moving towards it at an astounding speed of 2,200,000 km/h! (2.2 million km/h); and never coming back. Not orbiting it, moving towards it. This is about 0.002 times the speed of light! The below image is from NASA, imaging the region where the Great Attractor is located.
I was born in 1987, 27 years ago, from then to 2014, the Earth has moved 520 billion kilometers! My sister and I were born at the same hospital, in a gap of 3.5 years difference. Hence, even though the address of the hospital with respect to the Earth didn’t change, the Earth’s address has itself changed relative to the Great Attractor. The distance between our birth’s has been 67.5 billion kilometers. So close, yet so far! So just to break it down, the Earth moves about 19.2 billion kilometers every year. You can also calculate how far apart in space event’s really occurred.
Metaphorically, we will never get to the same place ever again. Sorry to break your romance.