On , I learnt ...
That Python’s datetime
package doesn’t support ordinal suffixes for the day of the month
Django’s date
template filter (and underlying
django.utils.dateformat
module) support using S
as a
format character for the English ordinal suffix for the day of the month.

As in:
{{ value|date:"jS F Y" }}
will render as something like:
2nd June 2022
However the S
format character is not supported by the strftime
and
strptime
functions of the standard library.
This is true of other languages too. Ordinal suffixes are not supported by the standard libraries of Golang, Java, Rust or Ruby either.
They are supported by PHP’s date
function though. Indeed, this was the
motivation for Django’s implementation.
