That makes sense. We found it when we started comparing supercharger visit dates that people entered with supercharger open dates, figuring they made a mistake if they visited the supercharger before it opened.
We found that in some cases they visited the day it opened, but the “open date” in supercharge.info showed it as opening the next day. The forum thread would confirm that it was open when they visited, the day before the “open date”.
We simply fixed our validation to allow visits one day before the “open date” in supercharge.info.