[Lucid:]

yes. from a purely scientific standpoint, your sign hasn't changed. since signs are based on the positions of the sun and stars, nothing has changed at all. a new constellation is visible, and the earth's rotation may have changed slightly over the years, so the sun may be in a different constellation on a particular day than it used to. but there has been no magical time-traveling, the sun was positioned in a certain spot in the sky in the past and that past cannot be changed now or ever.