Filming dates on IMDb – Where are the sources?
You can often find information about filming dates in the Filming & production section of IMDb. Sometimes the dates are very specific, like “Oct 17, 1993 – Feb 30, 1994,” while other times they are more vague, such as “2006” or “October 2006.”
However, there is no source provided for this data, which raises the question of whether users can input arbitrary information or if these details are verified before being published.