Field selection translation


I am trying to create a field function selection with a list of dates as strings and that will change automatically over the months and/or years. The strings can be such as "2022 - March".
Problem is: the translations.
How can I translate a selection with such values ? It’s not static. (I’m using Tryton 5.0)

Any ideas would be very welcomed, many thanks.

If it is a selection function then it is up to the function to return a list of tuple with the translated label into the language of the transaction.