diff --git a/packages/cubejs-api-gateway/index.js b/packages/cubejs-api-gateway/index.js
index 817e54a168b93..b912721a33a51 100644
--- a/packages/cubejs-api-gateway/index.js
+++ b/packages/cubejs-api-gateway/index.js
@@ -146,6 +146,8 @@ const querySchema = Joi.object().keys({
   ungrouped: Joi.boolean()
 });
 
+const DateRegex = /^\d\d\d\d-\d\d-\d\d$/;
+
 const normalizeQuery = (query) => {
   // eslint-disable-next-line no-unused-vars
   const { error, value } = Joi.validate(query, querySchema);
@@ -222,7 +224,13 @@ const normalizeQuery = (query) => {
       }
       return {
         ...td,
-        dateRange
+        dateRange: dateRange.map(
+          (d, i) => (
+            i === 0 ?
+              moment.utc(d).format(d.match(DateRegex) ? 'YYYY-MM-DDT00:00:00.000' : moment.HTML5_FMT.DATETIME_LOCAL_MS) :
+              moment.utc(d).format(d.match(DateRegex) ? 'YYYY-MM-DDT23:59:59.999' : moment.HTML5_FMT.DATETIME_LOCAL_MS)
+          )
+        )
       };
     }).concat(regularToTimeDimension)
   };
diff --git a/packages/cubejs-api-gateway/index.test.js b/packages/cubejs-api-gateway/index.test.js
index 2df6e1bbd5145..13615f06342c8 100644
--- a/packages/cubejs-api-gateway/index.test.js
+++ b/packages/cubejs-api-gateway/index.test.js
@@ -9,7 +9,8 @@ const compilerApi = jest.fn().mockImplementation(() => ({
     return {
       sql: ['SELECT * FROM test', []],
       aliasNameToMember: {
-        foo__bar: 'Foo.bar'
+        foo__bar: 'Foo.bar',
+        foo__time: 'Foo.time'
       }
     };
   },
@@ -23,6 +24,8 @@ const compilerApi = jest.fn().mockImplementation(() => ({
         }],
         dimensions: [{
           name: 'Foo.id'
+        }, {
+          name: 'Foo.time'
         }]
       }
     }];
@@ -75,4 +78,16 @@ describe(`API Gateway`, () => {
     console.log(res.body);
     expect(res.body && res.body.data).toStrictEqual([{ 'Foo.bar': 42 }]);
   });
+
+  test(`date range padding`, async () => {
+    const res = await request(app)
+      .get('/cubejs-api/v1/load?query={"measures":["Foo.bar"],"timeDimensions":[{"dimension":"Foo.time","granularity":"hour","dateRange":["2020-01-01","2020-01-01"]}]}')
+      .set('Authorization', 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.e30.t-IDcSemACt8x4iTMCda8Yhe3iZaWbvV5XKSTbuAn0M')
+      .expect(200);
+    console.log(res.body);
+    expect(res.body.query.timeDimensions[0].dateRange).toStrictEqual([
+      "2020-01-01T00:00:00.000",
+      "2020-01-01T23:59:59.999"
+    ]);
+  });
 });
diff --git a/packages/cubejs-client-core/src/ResultSet.js b/packages/cubejs-client-core/src/ResultSet.js
index 18d92f5eca4b1..b279a53d2d747 100644
--- a/packages/cubejs-client-core/src/ResultSet.js
+++ b/packages/cubejs-client-core/src/ResultSet.js
@@ -27,6 +27,8 @@ const TIME_SERIES = {
     .map(d => d.startOf('isoweek').format('YYYY-MM-DDT00:00:00.000'))
 };
 
+const DateRegex = /^\d\d\d\d-\d\d-\d\d$/;
+
 /**
  * Provides a convenient interface for data manipulation.
  */
@@ -171,7 +173,9 @@ class ResultSet {
     if (!dateRange) {
       return null;
     }
-    const padToDay = timeDimension.granularity !== 'minute' && timeDimension.granularity !== 'second';
+    const padToDay = timeDimension.dateRange ?
+      timeDimension.dateRange.find(d => d.match(DateRegex)) :
+      ['hour', 'minute', 'second'].indexOf(timeDimension.granularity) === -1;
     const start = moment(dateRange[0]).format(padToDay ? 'YYYY-MM-DDT00:00:00.000' : moment.HTML5_FMT.DATETIME_LOCAL_MS);
     const end = moment(dateRange[1]).format(padToDay ? 'YYYY-MM-DDT23:59:59.999' : moment.HTML5_FMT.DATETIME_LOCAL_MS);
     const range = moment.range(start, end);
diff --git a/packages/cubejs-client-core/src/ResultSet.test.js b/packages/cubejs-client-core/src/ResultSet.test.js
index eaa71bdca4ac1..67ffd5d36f815 100644
--- a/packages/cubejs-client-core/src/ResultSet.test.js
+++ b/packages/cubejs-client-core/src/ResultSet.test.js
@@ -72,6 +72,22 @@ describe('ResultSet', () => {
       ];
       expect(resultSet.timeSeries(timeDimension)).toEqual(output);
     });
+
+    test('it generates array of dates - granularity hour - not full day', () => {
+      const resultSet = new ResultSet({});
+      const timeDimension = {
+        dateRange: ['2015-01-01T10:30:00.000', '2015-01-01T13:59:00.000'],
+        granularity: 'hour',
+        timeDimension: 'Events.time'
+      };
+      const output = [
+        '2015-01-01T10:00:00.000',
+        '2015-01-01T11:00:00.000',
+        '2015-01-01T12:00:00.000',
+        '2015-01-01T13:00:00.000'
+      ];
+      expect(resultSet.timeSeries(timeDimension)).toEqual(output);
+    });
   });
 
   describe('normalizePivotConfig', () => {