I have a UTC datetime from a timestamptz PostgreSQL column, and am trying to:

1. convert it to the user’s timezone;
2. output a localised string representation for the frontend.

I’m trying to use DateTime for 1 and Cldr.DateTime for 2.

iex> {:ok, shifted} = DateTime.shift_zone(~U[2024-07-13 21:33:23.163097Z], "Europe/Berlin")
{:ok, #DateTime<2024-07-13 23:33:23.163097+02:00 CEST Europe/Berlin>}

However, Cldr.DateTime.to_string/2 doesn’t accept #DateTime<...>:

iex> {:ok, result} = Cldr.DateTime.to_string(shifted, "en-GB")
** (MatchError) no match of right hand side value: {:error, {ArgumentError, "Invalid DateTime. DateTime is a map that contains at least :year, :month, :day, :hour, :minute, :second and :calendar. Found: #DateTime<2024-07-13 23:33:23.163097+02:00 CEST Europe/Berlin Cldr.Calendar.Gregorian>"}}
    (stdlib 4.3.1.3) erl_eval.erl:496: :erl_eval.expr/6
    iex:3: (file)

I don’t know what #...<...> means, exactly, or how to convert it to a DateTime struct/map that Cldr.DateTime can use. Thanks.