Grammar with time.Format

I am trying to make a calendar using hugo. At the top of each month I’d like to have the month’s name displayed, so for example I have

{{ $t := "27 May 2024" }}
{{ time.Format "January 2006" $t }}

in english the output is fine, no issue.

May 2024

but in other languages, Polish in this case, we have grammar issues

maja 2024

maja is the wrong form in this case. Here we would want may, as in may itself (maj) not its possesive form.

The approach above is just a translation. To localize, use one of the localization tokens:

There isn’t a token for just month+year, so you’ll need to perform some string operations after the localization.

in Polish of them would be possessive so it would still be a case statement at that point, and only applicable to a singular language at a time

 {{ "27 May 2024" | time.Format ":date_medium" }} --> 27 maj 2024

So in this case is maj just an abbreviation?

its also the full word when non-possesive

so May 2023 → maj 2023
23rd of May → 23 maja

The upstream data is:

It’s derived from CLDR v36.1.

And the CLDR on this stuff is nowhere near complete. See:

In a few years, when the Unicode Consortium can actually agree on something, and then revise the tables, the new data will trickle downstream, perhaps to be incorporated in packages like the one referenced above.