The old Unix Timestamps in Elixir post is by far my most popular one. Because a lot changed in recent Elixir versions when it comes to handling of calendar types (such as dates, datetimes and times), I though it might be a good idea to update it. Here’s a new version with updates for Elixir 1.4 and Ecto 2.1:

http://michal.muskala.eu/2017/02/02/unix-timestamps-in-elixir-1-4.html