it is quite embarrassing for a Swiss company to select the US date format and make it non-modifiable. None of us wants to read a date with the month first. At first I though the sheet would use my browser or system region but even with everything in French or UK English I still have the dates in MM/DD/YYYY. It's a no go to use Proton Sheets for me.

I always use YYYY-MM-DD, it's the easiest way for me and easiest to sort. I have it in all my documents

This feature is super important for me. I'm migrating from google as a Proton paying customer.

yeah. at least ISO-standard date formats should be supported.

I am flabbergasted Proton Sheets launched without such a basic and essential feature... and then even defaults to the US date format even though being an european service. Since Proton Docs was released, I was hoping for a Proton Sheets so I could finally leave Google Docs behind. When that finally happened, I was over the moon... but in its current state, it is simply not able to compete with or be a replacement for Google Docs Sheets. :-(

Hopefully the date and time format gets as customizable as it is with Google Docs. That would be a great step forward.

DD/MM/YYYY is my favorite, and it is not easy to convert with formulae.

dd-mm-yyy is not the international date format - YYYY-MM-DD is.

This issue appears to be a duplicate of an issue higher up - can someone merge it?

Agreed that we should be able to specify this manually, but Sheets should pick up the default from the browser environment like any other application.

Backing this, I need dd-mm-yyyy or I'm unable to use Sheets. I've been waiting for this program very keenly - the last piece of the puzzle so I can ditch Google for good - but I can't use it yet.

Same as Lance, I need to have dd-MM-YYYY Format

It is not only the yyyy-mm-dd format, but it is also VERY importantly the international format of dd-mm-yyyyy etc are available.

I am not an American, and I use international formats. If you don't fully support that, then Proton Sheets is not an option.

There should be an option to provide a date format.

I need YYYY-MM-DD, which is easy to enter myself if given the option.

When importing an existent spreadsheet that I created with Google Drive, I was able to use cells with DD/MM/YYYY. It was recognized as a date field. But indeed it is necessary to have more formats.

💯 I imagine date formatting will quickly become an issue for this global audience.

And dd.mm.yyyy (used for example in the Czech Republic) would be great.

In Proton Sheets, Format -> Number, please add an option for an ISO 8601 date format (YYYY-MM-DD).