diff --git a/src/utils/dataUtils.test.ts b/src/utils/dataUtils.test.ts
index 67653ad..ba32be5 100644
--- a/src/utils/dataUtils.test.ts
+++ b/src/utils/dataUtils.test.ts
@@ -73,12 +73,11 @@ describe('padAndSortTimeSeries', () => {
   it('should return sorted and padded data for simple time series data for MINUTE interval', () => {
     //arrange
     const data = [
-      [1712919540000, 1], //Friday, 12 April 2024 10:59:00
       [1712919600000, 2], //Friday, 12 April 2024 11:00:00
       [1712919720000, 5], //Friday, 12 April 2024 11:02:00
     ];
 
-    const startTimestamp = 1712919560000; //Friday, 12 April 2024 10:59:20
+    const startTimestamp = 1712919540000; //Friday, 12 April 2024 10:59:00
     const endTimestamp = 1712919780000; //Friday, 12 April 2024 11:03:00
 
     //act
@@ -86,23 +85,23 @@ describe('padAndSortTimeSeries', () => {
 
     //assert
     expect(result).toEqual([
-      [1712919600000, 2],
-      [1712919660000, 0],
-      [1712919720000, 5],
-      [1712919780000, 0],
+      [1712919540000, 0], //Friday, 12 April 2024 10:59:00
+      [1712919600000, 2], //Friday, 12 April 2024 11:00:00
+      [1712919660000, 0], //Friday, 12 April 2024 11:01:00
+      [1712919720000, 5], //Friday, 12 April 2024 11:02:00
+      [1712919780000, 0], //Friday, 12 April 2024 11:03:00
     ]);
   });
 
   it('should return sorted and padded data for simple time series data for HOUR Interval', () => {
     //arrange
     const data = [
-      [1712916000000, 1], //Friday, 12 April 2024 10:00:00
       [1712919600000, 7], //Friday, 12 April 2024 11:00:00
       [1712930400000, 5], //Friday, 12 April 2024 14:00:00
       [1712934000000, 2], //Friday, 12 April 2024 15:00:00
     ];
 
-    const startTimestamp = 1712917444000; //Friday, 12 April 2024 10:24:04
+    const startTimestamp = 1712916000000; //Friday, 12 April 2024 10:00:00
     const endTimestamp = 1712935444000; //Friday, 12 April 2024 15:24:04
 
     //act
@@ -110,6 +109,7 @@ describe('padAndSortTimeSeries', () => {
 
     //assert
     expect(result).toEqual([
+      [1712916000000, 0], //Friday, 12 April 2024 10:00:00
       [1712919600000, 7], //Friday, 12 April 2024 11:00:00
       [1712923200000, 0], //Friday, 12 April 2024 12:00:00
       [1712926800000, 0], //Friday, 12 April 2024 13:00:00
@@ -121,12 +121,11 @@ describe('padAndSortTimeSeries', () => {
   it('should return sorted and padded data for simple time series data for DAY interval', () => {
     //arrange
     const data = [
-      [1712917800000, 1], //Friday, 12 April 2024 10:30:00
       [1713004200000, 2], //Saturday, 13 April 2024 10:30:00
       [1713263400000, 5], //Tuesday, 16 April 2024 10:30:00
     ];
 
-    const startTimestamp = 1712919560000; //Friday, 12 April 2024 10:59:20
+    const startTimestamp = 1712917800000; //Friday, 12 April 2024 10:30:00
     const endTimestamp = 1713351560000; //Wednesday, 17 April 2024 10:59:20
 
     //act
@@ -134,6 +133,7 @@ describe('padAndSortTimeSeries', () => {
 
     //assert
     expect(result).toEqual([
+      [1712917800000, 0], //Friday, 12 April 2024 10:30:00
       [1713004200000, 2], //Saturday, 13 April 2024 10:30:00
       [1713090600000, 0], //Sunday, 14 April 2024 10:30:00
       [1713177000000, 0], //Monday, 15 April 2024 10:30:00
@@ -142,39 +142,61 @@ describe('padAndSortTimeSeries', () => {
     ]);
   });
 
-  it('should return sorted and padded data for simple time series data for DAY interval', () => {
+  it('should return sorted and padded data for simple time series data for MONTH interval with start Day being the last of a month', () => {
     //arrange
     const data = [
-      [1712917800000, 1], //Friday, 12 April 2024 10:30:00
-      [1713004200000, 2], //Saturday, 13 April 2024 10:30:00
-      [1713263400000, 5], //Tuesday, 16 April 2024 10:30:00
+      [1706740200000, 1], //Wednesday, 31 January 2024 22:30:00
+      [1711924200000, 2], //Sunday, 31 March 2024 22:30:00
+      [1714516200000, 5], //Tuesday, 30 April 2024 22:30:00
     ];
 
-    const startTimestamp = 1712919560000; //Friday, 12 April 2024 10:59:20
-    const endTimestamp = 1713351560000; //Wednesday, 17 April 2024 10:59:20
+    const startTimestamp = 1706740200000; //Wednesday, 31 January 2024 22:30:00
+    const endTimestamp = 1718454244000; //Saturday, 15 June 2024 12:24:04
 
     //act
-    const result = padAndSortTimeSeries(data, startTimestamp, endTimestamp, 'DAY');
+    const result = padAndSortTimeSeries(data, startTimestamp, endTimestamp, 'MONTH');
 
     //assert
     expect(result).toEqual([
-      [1713004200000, 2], //Saturday, 13 April 2024 10:30:00
-      [1713090600000, 0], //Sunday, 14 April 2024 10:30:00
-      [1713177000000, 0], //Monday, 15 April 2024 10:30:00
-      [1713263400000, 5], //Tuesday, 16 April 2024 10:30:00
-      [1713349800000, 0], //Wednesday, 17 April 2024 10:30:00
+      [1706740200000, 1], //Wednesday, 31 January 2024 22:30:00
+      [1709245800000, 0], //Thursday, 29 February 2024 22:30:00
+      [1711924200000, 2], //Sunday, 31 March 2024 22:30:00
+      [1714516200000, 5], //Tuesday, 30 April 2024 22:30:00
+      [1717194600000, 0], // Friday, 31 May 2024 22:30:00
+    ]);
+  });
+
+  it('should return sorted and padded data for simple time series data for MONTH interval with start Day being the first of a month', () => {
+    //arrange
+    const data = [
+      [1712010600000, 2], //Monday, 1 April 2024 22:30:00
+      [1714602600000, 5], //Wednesday, 1 May 2024 22:30:00
+    ];
+
+    const startTimestamp = 1706826600000; //Thursday, 1 February 2024 22:30:00
+    const endTimestamp = 1718454244000; //Saturday, 15 June 2024 12:24:04
+
+    //act
+    const result = padAndSortTimeSeries(data, startTimestamp, endTimestamp, 'MONTH');
+
+    //assert
+    expect(result).toEqual([
+      [1706826600000, 0], //Thursday, 1 February 2024 22:30:00
+      [1709332200000, 0], //Friday, 1 March 2024 22:30:00
+      [1712010600000, 2], //Monday, 1 April 2024 22:30:00
+      [1714602600000, 5], //Wednesday, 1 May 2024 22:30:00
+      [1717281000000, 0], //Saturday, 1 June 2024 22:30:00
     ]);
   });
 
   it('should return sorted and padded data for grouped time series data for MINUTE interval', () => {
     //arrange
     const data = [
-      [1712919540000, 'BROWSER', 'DEVICE_TYPE', 1], //Friday, 12 April 2024 10:59:00
       [1712919600000, 'BROWSER', 'DEVICE_TYPE', 2], //Friday, 12 April 2024 11:00:00
       [1712919720000, 'BROWSER', 'DEVICE_TYPE', 5], //Friday, 12 April 2024 11:02:00
     ];
 
-    const startTimestamp = 1712919560000; //Friday, 12 April 2024 10:59:20
+    const startTimestamp = 1712919540000; //Friday, 12 April 2024 10:59:00
     const endTimestamp = 1712919780000; //Friday, 12 April 2024 11:03:00
 
     //act
@@ -182,23 +204,23 @@ describe('padAndSortTimeSeries', () => {
 
     //assert
     expect(result).toEqual([
-      [1712919600000, 'BROWSER', 'DEVICE_TYPE', 2],
-      [1712919660000, 'BROWSER', 'DEVICE_TYPE', 0],
-      [1712919720000, 'BROWSER', 'DEVICE_TYPE', 5],
-      [1712919780000, 'BROWSER', 'DEVICE_TYPE', 0],
+      [1712919540000, 'BROWSER', 'DEVICE_TYPE', 0], //Friday, 12 April 2024 10:59:00
+      [1712919600000, 'BROWSER', 'DEVICE_TYPE', 2], //Friday, 12 April 2024 11:00:00
+      [1712919660000, 'BROWSER', 'DEVICE_TYPE', 0], //Friday, 12 April 2024 11:01:00
+      [1712919720000, 'BROWSER', 'DEVICE_TYPE', 5], //Friday, 12 April 2024 11:02:00
+      [1712919780000, 'BROWSER', 'DEVICE_TYPE', 0], //Friday, 12 April 2024 11:03:00
     ]);
   });
 
   it('should return sorted and padded data for grouped time series data for HOUR interval', () => {
     //arrange
     const data = [
-      [1712916000000, 'BROWSER', 'DEVICE_TYPE', 1], //Friday, 12 April 2024 10:00:00
       [1712919600000, 'BROWSER', 'DEVICE_TYPE', 7], //Friday, 12 April 2024 11:00:00
       [1712930400000, 'BROWSER', 'DEVICE_TYPE', 5], //Friday, 12 April 2024 14:00:00
       [1712934000000, 'BROWSER', 'DEVICE_TYPE', 2], //Friday, 12 April 2024 15:00:00
     ];
 
-    const startTimestamp = 1712917444000; //Friday, 12 April 2024 10:24:04
+    const startTimestamp = 1712916000000; //Friday, 12 April 2024 10:00:00
     const endTimestamp = 1712935444000; //Friday, 12 April 2024 15:24:04
 
     //act
@@ -206,6 +228,7 @@ describe('padAndSortTimeSeries', () => {
 
     //assert
     expect(result).toEqual([
+      [1712916000000, 'BROWSER', 'DEVICE_TYPE', 0], //Friday, 12 April 2024 10:00:00
       [1712919600000, 'BROWSER', 'DEVICE_TYPE', 7], //Friday, 12 April 2024 11:00:00
       [1712923200000, 'BROWSER', 'DEVICE_TYPE', 0], //Friday, 12 April 2024 12:00:00
       [1712926800000, 'BROWSER', 'DEVICE_TYPE', 0], //Friday, 12 April 2024 13:00:00
@@ -217,12 +240,11 @@ describe('padAndSortTimeSeries', () => {
   it('should return sorted and padded data for grouped time series data for DAY interval', () => {
     //arrange
     const data = [
-      [1712917800000, 'BROWSER', 'DEVICE_TYPE', 1], //Friday, 12 April 2024 10:30:00
       [1713004200000, 'BROWSER', 'DEVICE_TYPE', 2], //Saturday, 13 April 2024 10:30:00
       [1713263400000, 'BROWSER', 'DEVICE_TYPE', 5], //Tuesday, 16 April 2024 10:30:00
     ];
 
-    const startTimestamp = 1712919560000; //Friday, 12 April 2024 10:59:20
+    const startTimestamp = 1712917800000; //Friday, 12 April 2024 10:30:00
     const endTimestamp = 1713351560000; //Wednesday, 17 April 2024 10:59:20
 
     //act
@@ -230,6 +252,7 @@ describe('padAndSortTimeSeries', () => {
 
     //assert
     expect(result).toEqual([
+      [1712917800000, 'BROWSER', 'DEVICE_TYPE', 0], //Friday, 12 April 2024 10:30:00
       [1713004200000, 'BROWSER', 'DEVICE_TYPE', 2], //Saturday, 13 April 2024 10:30:00
       [1713090600000, 'BROWSER', 'DEVICE_TYPE', 0], //Sunday, 14 April 2024 10:30:00
       [1713177000000, 'BROWSER', 'DEVICE_TYPE', 0], //Monday, 15 April 2024 10:30:00
@@ -238,6 +261,53 @@ describe('padAndSortTimeSeries', () => {
     ]);
   });
 
+  it('should return sorted and padded data for grouped time series data for MONTH interval with start Day being the last of a month', () => {
+    //arrange
+    const data = [
+      [1706740200000, 'BROWSER', 'DEVICE_TYPE', 1], //Wednesday, 31 January 2024 22:30:00
+      [1711924200000, 'BROWSER', 'DEVICE_TYPE', 2], //Sunday, 31 March 2024 22:30:00
+      [1714516200000, 'BROWSER', 'DEVICE_TYPE', 5], //Tuesday, 30 April 2024 22:30:00
+    ];
+
+    const startTimestamp = 1706740200000; //Wednesday, 31 January 2024 22:30:00
+    const endTimestamp = 1718454244000; //Saturday, 15 June 2024 12:24:04
+
+    //act
+    const result = padAndSortTimeSeries(data, startTimestamp, endTimestamp, 'MONTH');
+
+    //assert
+    expect(result).toEqual([
+      [1706740200000, 'BROWSER', 'DEVICE_TYPE', 1], //Wednesday, 31 January 2024 22:30:00
+      [1709245800000, 'BROWSER', 'DEVICE_TYPE', 0], //Thursday, 29 February 2024 22:30:00
+      [1711924200000, 'BROWSER', 'DEVICE_TYPE', 2], //Sunday, 31 March 2024 22:30:00
+      [1714516200000, 'BROWSER', 'DEVICE_TYPE', 5], //Tuesday, 30 April 2024 22:30:00
+      [1717194600000, 'BROWSER', 'DEVICE_TYPE', 0], // Friday, 31 May 2024 22:30:00
+    ]);
+  });
+
+  it('should return sorted and padded data for grouped time series data for MONTH interval with start Day being the first of a month', () => {
+    //arrange
+    const data = [
+      [1712010600000, 'BROWSER', 'DEVICE_TYPE', 2], //Monday, 1 April 2024 22:30:00
+      [1714602600000, 'BROWSER', 'DEVICE_TYPE', 5], //Wednesday, 1 May 2024 22:30:00
+    ];
+
+    const startTimestamp = 1706826600000; //Thursday, 1 February 2024 22:30:00
+    const endTimestamp = 1718454244000; //Saturday, 15 June 2024 12:24:04
+
+    //act
+    const result = padAndSortTimeSeries(data, startTimestamp, endTimestamp, 'MONTH');
+
+    //assert
+    expect(result).toEqual([
+      [1706826600000, 'BROWSER', 'DEVICE_TYPE', 0], //Thursday, 1 February 2024 22:30:00
+      [1709332200000, 'BROWSER', 'DEVICE_TYPE', 0], //Friday, 1 March 2024 22:30:00
+      [1712010600000, 'BROWSER', 'DEVICE_TYPE', 2], //Monday, 1 April 2024 22:30:00
+      [1714602600000, 'BROWSER', 'DEVICE_TYPE', 5], //Wednesday, 1 May 2024 22:30:00
+      [1717281000000, 'BROWSER', 'DEVICE_TYPE', 0], //Saturday, 1 June 2024 22:30:00
+    ]);
+  });
+
   it('should throw error when interval is not valid', () => {
     //arrange
     const data = [[0, 0]];