diff --git a/app/models/individual.rb b/app/models/individual.rb
index 3a0c1410c..b5ac55067 100644
--- a/app/models/individual.rb
+++ b/app/models/individual.rb
@@ -8,6 +8,7 @@ class Individual < ApplicationRecord
   validates :birthdate, format: { with: /\A\d{4}\-\d{2}\-\d{2}\z/, message: "La date n'est pas au format AAAA-MM-JJ" }, allow_nil: true
 
   before_validation :set_iso_date, if: -> { birthdate_changed? }
+  before_save :save_birthdate_in_datetime_format
 
   private
 
@@ -17,4 +18,13 @@ class Individual < ApplicationRecord
       self.birthdate = Date.parse(birthdate).iso8601
     end
   end
+
+  def save_birthdate_in_datetime_format
+    if birthdate.present?
+      begin
+        self.second_birthdate = Date.parse(birthdate)
+      rescue
+      end
+    end
+  end
 end
diff --git a/db/migrate/20180403094135_add_second_birthdate_column_to_individual.rb b/db/migrate/20180403094135_add_second_birthdate_column_to_individual.rb
new file mode 100644
index 000000000..a3a8c1c4f
--- /dev/null
+++ b/db/migrate/20180403094135_add_second_birthdate_column_to_individual.rb
@@ -0,0 +1,5 @@
+class AddSecondBirthdateColumnToIndividual < ActiveRecord::Migration[5.2]
+  def change
+    add_column :individuals, :second_birthdate, :date
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 0e708a7fe..303a660fd 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2018_03_23_101837) do
+ActiveRecord::Schema.define(version: 2018_04_03_094135) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -366,6 +366,7 @@ ActiveRecord::Schema.define(version: 2018_03_23_101837) do
     t.string "gender"
     t.datetime "created_at"
     t.datetime "updated_at"
+    t.date "second_birthdate"
     t.index ["dossier_id"], name: "index_individuals_on_dossier_id"
   end
 
diff --git a/lib/tasks/2018_04_03_type_individual_date.rake b/lib/tasks/2018_04_03_type_individual_date.rake
new file mode 100644
index 000000000..b9af6d731
--- /dev/null
+++ b/lib/tasks/2018_04_03_type_individual_date.rake
@@ -0,0 +1,14 @@
+namespace :'2018_04_03_type_individual_date' do
+  task set: :environment do
+    Individual.all.each { |individual| save_birthdate_in_datetime_format(individual) }
+  end
+
+  def save_birthdate_in_datetime_format(individual)
+    if individual.birthdate.present?
+      begin
+        individual.update_column(:second_birthdate, Date.parse(individual.birthdate))
+      rescue
+      end
+    end
+  end
+end
diff --git a/spec/models/individual_spec.rb b/spec/models/individual_spec.rb
index c101a1ca7..43d627139 100644
--- a/spec/models/individual_spec.rb
+++ b/spec/models/individual_spec.rb
@@ -23,6 +23,7 @@ describe Individual do
 
         it { expect(individual.valid?).to be true }
         it { expect(individual.birthdate).to eq("1980-11-12") }
+        it { expect(individual.second_birthdate).to eq(Date.new(1980, 11, 12)) }
       end
 
       context "and the format is ISO" do
@@ -30,6 +31,7 @@ describe Individual do
 
         it { expect(individual.valid?).to be true }
         it { expect(individual.birthdate).to eq("1980-11-12") }
+        it { expect(individual.second_birthdate).to eq(Date.new(1980, 11, 12)) }
       end
 
       context "and the format is WTF" do
@@ -37,6 +39,7 @@ describe Individual do
 
         it { expect(individual.valid?).to be false }
         it { expect(individual.birthdate).to eq("1980 1 12") }
+        it { expect(individual.second_birthdate).to be_nil }
       end
     end
   end