DateTime Format to string?

Questions & Help Questions
2

You can do that

iex(1)> d = DateTime.utc_now
%DateTime{calendar: Calendar.ISO, day: 18, hour: 6, microsecond: {876000, 6},
 minute: 8, month: 9, second: 59, std_offset: 0, time_zone: "Etc/UTC",
 utc_offset: 0, year: 2016, zone_abbr: "UTC"}
iex(2)> DateTime.to_string(d)
"2016-09-18 06:08:59.876000Z" 
iex(3)> s = "#{d.year}/#{d.month}/#{d.day}"
"2016/9/18"