have you tried in Invoice's OPTIONS (button on the top right corner of the backend)?

it says: DATE_FORMAT_LC3

What should I change to make "Month Day Year" instead of "Day Month Year"?

these are joomla's standard date formats:

DATE_FORMAT_LC="l, d F Y"
DATE_FORMAT_LC1="l, d F Y"
DATE_FORMAT_LC2="l, d F Y H:i"
DATE_FORMAT_LC3="d F Y"
DATE_FORMAT_LC4="Y-m-d"
DATE_FORMAT_JS1="y-m-d"

you can alternatively set this:

F d Y

(which is month day year)

Thanks! Thanks! Thanks!

:woohoo: :woohoo: :woohoo:

you're most welcomed