Remember, comparisons in Elixir using ==/2, >/2, </2 and friends are structural and based on the DateTime struct fields. For proper comparison between datetimes, use the compare/2 function.
As the DateTime docs say, you'll
want to use compare/2
in order to accurately compare two DateTime structs.
{:ok, older} = DateTime.from_naive(~N[2016-05-24 13:26:08.003], "Etc/UTC")
{:ok, newer} = DateTime.from_naive(~N[2017-11-24 13:26:08.003], "Etc/UTC")
DateTime.compare(older, newer)
#=> :lt
DateTime.compare(newer, older)
#=> :gt
DateTime.compare(newer, newer)
#=> :eqWhen using compare/2, you'll get one of :lt, :gt, or :eq as a
result, meaning less than, greater than, or equal respectively.