My bank allows downloading lists of transactions for my bank account in various formats like MS Money and Quicken. As far as I've seen, the Quicken format is the one best supported by HomeBank.
Unfortunately, all those files exported by my bank contain the date as a simple numeric string (DDMMYYYY or YYYYMMDD). HomeBank's import dialog allows changing the order of date entries, but it seems that the parts always have to be separated by a dash. This prevents me from importing the files, because HomeBank doesn't recognize a date like "17112020".
According to the QIF format documentation of GnuCash (https://github.com/Gnucash/gnucash/blob/master/gnucash/import-export/qif-imp/file-format.txt), the date formats vary wildly, so it should at least be possible to configure the delimiter of the date parts in HomeBank.
date with no separator added