Hindi series of talks with dates (source document)
This is a major new (as of Jun 2020) source of info for dates of Hindi talks. It is from a Gujarati friend of Anuragi. This list seems accurate enough so far and has a lot of info not seen before. Should (possible) inaccuracies be found, they will be mentioned in the discussion page. Transliteration standards are not the highest but are easily navigable.
Here is the PDF: File:Hindi series of talks with dates (source document).pdf