Okay - please just let's all agree to end this frikkin' nonsense about the alignment of the Sun, the earth and the center of the galaxy once and for all - at least on this site. It's embarrassing.
I have created a simple (simplified) little chart that makes it clear that twice a year there is an alignment of the Earth, the Sun and the center of the Milky Way. Given the scale (around 25 thousand light year radius), variations in three dimensions are rendered moot.
The Earth has been around for about 4.5 billion years. The Earth, Sun and the center of the galaxy line up (see illustration) twice a year. This has happened 900 billion times!
So please frikkin' stop wasting your time thinking about it any longer.