diff --git a/src/covid19/blueprints/owid/owid_model.py b/src/covid19/blueprints/owid/owid_model.py
index 605f24d55b9265a91285b215059a981265c875ce..bdd53640915ab2771311da63d050c54084249439 100644
--- a/src/covid19/blueprints/owid/owid_model.py
+++ b/src/covid19/blueprints/owid/owid_model.py
@@ -249,11 +249,6 @@ class OwidData(db.Model):
         # TODO
         pass
 
-    @classmethod
-    def get_joungest_datum(cls):
-        # TODO
-        pass
-
     @classmethod
     def get_data_for_one_day(cls, date_reported):
         return db.session.query(cls).filter(
@@ -268,7 +263,22 @@ class OwidData(db.Model):
             cls.new_cases_per_million.desc()
         ).all()
 
+    @classmethod
+    def get_datum_of_all_data(cls):
+        datum_of_all_who_data = []
+        for data in db.session.query(cls).options(subqueryload("date_reported").load_only("date_reported_import_str")):
+            datum = data.date_reported.date_reported_import_str
+            if not datum in datum_of_all_who_data:
+                datum_of_all_who_data.append(datum)
+        datum_of_all_who_data.sort()
+        return datum_of_all_who_data
+
+    @classmethod
+    def get_joungest_datum(cls):
+        return cls.get_datum_of_all_data().pop()
+
     @classmethod
     def delete_data_for_one_day(cls, date_reported):
-        # TODO
-        pass
+        for data in cls.get_data_for_one_day():
+            db.session.remove(data)
+        db.session.commit()
diff --git a/src/covid19/blueprints/owid/owid_model_import.py b/src/covid19/blueprints/owid/owid_model_import.py
index b1cbc52d299b4e827bf0a57f198422423028dc1d..d3b47020e7b3d2fdaabea376cad0f6b4e26f0ba7 100644
--- a/src/covid19/blueprints/owid/owid_model_import.py
+++ b/src/covid19/blueprints/owid/owid_model_import.py
@@ -128,6 +128,10 @@ class OwidImport(db.Model):
     def get_new_dates_reported_as_array(cls):
         return cls.get_dates_reported_as_array()
 
+    @classmethod
+    def get_datum_of_all_import(cls):
+        return cls.get_dates_reported_as_array()
+
     @classmethod
     def get_continents(cls, page):
         return db.session.query(cls.continent)\
diff --git a/src/covid19/blueprints/owid/owid_service_update.py b/src/covid19/blueprints/owid/owid_service_update.py
index 2848fd3d9108ff03c3047d9541f070fc1e2c874c..549d5aa8b18994df5962fbaf5b6b7665d9220ee2 100644
--- a/src/covid19/blueprints/owid/owid_service_update.py
+++ b/src/covid19/blueprints/owid/owid_service_update.py
@@ -14,6 +14,14 @@ class OwidServiceUpdate:
         app.logger.debug("------------------------------------------------------------")
         app.logger.debug(" OWID Service Update [ready]")
 
+    def who_import_get_new_dates_as_array(self):
+        new_dates_reported_from_import = []
+        list_datum_of_all_data = OwidData.get_datum_of_all_data()
+        for item in OwidImport.get_datum_of_all_import():
+            if not item in list_datum_of_all_data:
+                new_dates_reported_from_import.append(item)
+        return new_dates_reported_from_import
+
     def __update_date_reported(self):
         app.logger.info(" __update_date_reported [begin]")
         app.logger.info("------------------------------------------------------------")
diff --git a/src/covid19/blueprints/owid_test/owid_test_views.py b/src/covid19/blueprints/owid_test/owid_test_views.py
index 6e4b4e4a13eb31e05c131cc99528cbecdbca8705..07c31f39ba751a43c75e08bea14d2e161d5ad2da 100644
--- a/src/covid19/blueprints/owid_test/owid_test_views.py
+++ b/src/covid19/blueprints/owid_test/owid_test_views.py
@@ -84,40 +84,62 @@ def url_owid_test_owid_import_countries():
 @app_owid_test.route('/owid_import/get_new_dates_as_array')
 @login_required
 def url_owid_test_owid_import_get_new_dates_as_array():
-    app.logger.info("update_star_schema_initial - START")
-    flash("update_star_schema_initial - START")
+    app.logger.info("url_owid_test_owid_import_get_new_dates_as_array - START")
+    flash("url_owid_test_owid_import_get_new_dates_as_array - START")
+    i = 0
+    for date_reported in OwidImport.get_new_dates_reported_as_array():
+        i += 1
+        line = " | " + str(i) + " | " + date_reported + " | "
+        app.logger.info(line)
+    app.logger.info("url_owid_test_owid_import_get_new_dates_as_array - DONE")
+    flash("url_owid_test_owid_import_get_new_dates_as_array - DONE")
     return redirect(url_for('owid_test.url_owid_test_tests'))
 
 
 @app_owid_test.route('/owid_data/get_datum_of_all_owid_data')
 @login_required
 def url_owid_test_owid_data_get_datum_of_all_owid_data():
-    app.logger.info("update_star_schema_initial - START")
-    flash("update_star_schema_initial - START")
+    app.logger.info("url_owid_test_owid_data_get_datum_of_all_owid_data - START")
+    flash("url_owid_test_owid_data_get_datum_of_all_owid_data - START")
+    for datum in OwidData.get_datum_of_all_data():
+        app.logger.info(str(datum))
+    app.logger.info("url_owid_test_owid_data_get_datum_of_all_owid_data - DONE")
+    flash("url_owid_test_owid_data_get_datum_of_all_owid_data - DONE")
     return redirect(url_for('owid_test.url_owid_test_tests'))
 
 
 @app_owid_test.route('/owid_data/update_star_schema_initial')
 @login_required
 def url_owid_test_owid_data_get_datum_of_all_owid_import():
-    app.logger.info("update_star_schema_initial - START")
-    flash("update_star_schema_initial - START")
+    app.logger.info("url_owid_test_owid_data_get_datum_of_all_owid_import - START")
+    flash("url_owid_test_owid_data_get_datum_of_all_owid_import - START")
+    for datum in OwidImport.get_datum_of_all_import():
+        app.logger.info(str(datum))
+    app.logger.info("url_owid_test_owid_data_get_datum_of_all_owid_import - DONE")
+    flash("url_owid_test_owid_data_get_datum_of_all_owid_import - DONE")
     return redirect(url_for('owid_test.url_owid_test_tests'))
 
 
 @app_owid_test.route('/owid_service/owid_import/get_new_dates_as_array')
 @login_required
 def url_owid_test_owid_service_owid_import_get_new_dates_as_array():
-    app.logger.info("update_star_schema_initial - START")
-    flash("update_star_schema_initial - START")
+    app.logger.info("url_owid_test_owid_service_owid_import_get_new_dates_as_array - START")
+    flash("url_owid_test_owid_service_owid_import_get_new_dates_as_array - START")
+    for datum in owid_service.service_update.who_import_get_new_dates_as_array():
+        app.logger.info(str(datum))
+    app.logger.info("url_owid_test_owid_service_owid_import_get_new_dates_as_array - DONE")
+    flash("url_owid_test_owid_service_owid_import_get_new_dates_as_array - DONE")
     return redirect(url_for('owid_test.url_owid_test_tests'))
 
 
 @app_owid_test.route('/owid_test_service/delete_last_days_data')
 @login_required
 def url_owid_test_owid_test_service_delete_last_days_data():
-    app.logger.info("update_star_schema_initial - START")
-    flash("update_star_schema_initial - START")
+    app.logger.info("url_owid_test_owid_test_service_delete_last_days_data - START")
+    flash("url_owid_test_owid_test_service_delete_last_days_data - START")
+    owid_test_service.delete_last_day()
+    app.logger.info("url_owid_test_owid_test_service_delete_last_days_data - DONE")
+    flash("url_owid_test_owid_test_service_delete_last_days_data - DONE")
     return redirect(url_for('owid_test.url_owid_test_tests'))
 
 
diff --git a/src/covid19/blueprints/who/who_model.py b/src/covid19/blueprints/who/who_model.py
index 0a8e3c64bd18c709b0a1d0555ba1dd4eda8b3fb1..12e0817b1408c488de0ea4153cfaaf9aa0384eed 100644
--- a/src/covid19/blueprints/who/who_model.py
+++ b/src/covid19/blueprints/who/who_model.py
@@ -344,7 +344,7 @@ class WhoData(db.Model):
         ).paginate(page, per_page=ITEMS_PER_PAGE)
 
     @classmethod
-    def get_datum_of_all_who_data(cls):
+    def get_datum_of_all_data(cls):
         datum_of_all_who_data = []
         for data in db.session.query(cls).options(subqueryload("date_reported").load_only("date_reported_import_str")):
             datum = data.date_reported.date_reported_import_str
diff --git a/src/covid19/blueprints/who_test/who_test_views.py b/src/covid19/blueprints/who_test/who_test_views.py
index 592ae7734f832744e1cc9f148dfb4d82cedc507a..48d487fc3df0f88863701cf0e5afeed568df68a8 100644
--- a/src/covid19/blueprints/who_test/who_test_views.py
+++ b/src/covid19/blueprints/who_test/who_test_views.py
@@ -69,7 +69,7 @@ def url_who_test_who_import_get_new_dates_as_array():
 def url_who_test_who_data_get_datum_of_all_who_data():
     app.logger.info("url_who_test_who_data_get_datum_of_all_who_data - DONE: WhoData.get_datum_of_all_who_data()")
     flash("url_who_test_who_data_get_datum_of_all_who_data - START: WhoData.get_datum_of_all_who_data()")
-    for datum in WhoData.get_datum_of_all_who_data():
+    for datum in WhoData.get_datum_of_all_data():
         app.logger.info(str(datum))
     flash("url_who_test_who_data_get_datum_of_all_who_data - DONE: WhoData.get_datum_of_all_who_data()")
     app.logger.info("url_who_test_who_data_get_datum_of_all_who_data - DONE: WhoData.get_datum_of_all_who_data()")