I had to make a couple of changes for the PDF invoices to show my preferred date format:

1. Change the date format in the language *my profile* is using. I added the month abbreviation to make it easier to confirm I had the desired date i.e. instead of 1/1/24 I now see 1/Jan/24.
2. I had to change the language assigned to my customer by editing the Contact and setting their language to match my preferred language.

Additionally, I found that once a PDF has been generated for the Invoice, Odoo will not generate a new PDF reflecting your changes to dates until you delete the PDF from the Invoice (it's an attachment accessible from below the invoice details).

Hi there,

I activated developer mode and added New Zealand which is now above US and activated it.

This managed to get the dates correct using Oodo however when the PDF/invoice are generated the date format is still in the US format MM/DD/YYYY

I need it to be DD/MM/YYYY

Please help. Thanks