diff --git a/src/app/modules/angular-slickgrid/formatters/__tests__/dateEuroFormatter.spec.ts b/src/app/modules/angular-slickgrid/formatters/__tests__/dateEuroFormatter.spec.ts
index fc03777e4..82d9c5bd2 100644
--- a/src/app/modules/angular-slickgrid/formatters/__tests__/dateEuroFormatter.spec.ts
+++ b/src/app/modules/angular-slickgrid/formatters/__tests__/dateEuroFormatter.spec.ts
@@ -16,7 +16,7 @@ describe('the DateEuro Formatter', () => {
 
   it('should provide a dateIso formatted input and return a formatted date value without time when valid date value is provided', () => {
     const value = '2019-05-03 00:00:01';
-    const result = Formatters.dateEuro(0, 0, value, { input: 'dateIso' } as unknown as Column, {}, {});
+    const result = Formatters.dateEuro(0, 0, value, { type: 'dateIso' } as unknown as Column, {}, {});
     expect(result).toBe('03/05/2019');
   });
 
diff --git a/src/app/modules/angular-slickgrid/formatters/__tests__/dateIsoFormatter.spec.ts b/src/app/modules/angular-slickgrid/formatters/__tests__/dateIsoFormatter.spec.ts
index 915da1cb4..eebd427cf 100644
--- a/src/app/modules/angular-slickgrid/formatters/__tests__/dateIsoFormatter.spec.ts
+++ b/src/app/modules/angular-slickgrid/formatters/__tests__/dateIsoFormatter.spec.ts
@@ -17,7 +17,7 @@ describe('the Date ISO Formatter', () => {
 
   it('should provide a dateIso formatted input and return a formatted date value without time when valid date value is provided', () => {
     const value = '2019-05-03 00:00:01';
-    const result = Formatters.dateIso(0, 0, value, { input: 'dateIso' } as unknown as Column, {}, {});
+    const result = Formatters.dateIso(0, 0, value, { type: 'dateIso' } as unknown as Column, {}, {});
     expect(result).toBe('2019-05-03');
   });
 
diff --git a/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeEuroAmPmFormatter.spec.ts b/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeEuroAmPmFormatter.spec.ts
index 7f5cb55a3..284f68090 100644
--- a/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeEuroAmPmFormatter.spec.ts
+++ b/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeEuroAmPmFormatter.spec.ts
@@ -16,7 +16,7 @@ describe('the DateTimeShortEuro Formatter', () => {
 
   it('should provide a dateIso formatted input and return a formatted date value without time when valid date value is provided', () => {
     const value = '2019-05-01 02:36:07';
-    const result = Formatters.dateTimeEuroAmPm(0, 0, value, { input: 'dateIso' } as unknown as Column, {}, {});
+    const result = Formatters.dateTimeEuroAmPm(0, 0, value, { type: 'dateIso' } as unknown as Column, {}, {});
     expect(result).toBe('01/05/2019 02:36:07 am');
   });
 
diff --git a/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeEuroFormatter.spec.ts b/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeEuroFormatter.spec.ts
index 7051a2cba..5f1d49374 100644
--- a/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeEuroFormatter.spec.ts
+++ b/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeEuroFormatter.spec.ts
@@ -16,7 +16,7 @@ describe('the DateTimeEuro Formatter', () => {
 
   it('should provide a dateIso formatted input and return a formatted date value without time when valid date value is provided', () => {
     const value = '2019-05-01 02:36:07';
-    const result = Formatters.dateTimeEuro(0, 0, value, { input: 'dateIso' } as unknown as Column, {}, {});
+    const result = Formatters.dateTimeEuro(0, 0, value, { type: 'dateIso' } as unknown as Column, {}, {});
     expect(result).toBe('01/05/2019 02:36:07');
   });
 
diff --git a/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeIsoAmPmFormatter.spec.ts b/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeIsoAmPmFormatter.spec.ts
index 992ec90d0..8be13ef03 100644
--- a/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeIsoAmPmFormatter.spec.ts
+++ b/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeIsoAmPmFormatter.spec.ts
@@ -16,7 +16,7 @@ describe('the DateTimeIsoAmPm Formatter', () => {
 
   it('should provide a dateIso formatted input and return a formatted date value without time when valid date value is provided', () => {
     const value = '2019-05-01 02:36:07';
-    const result = Formatters.dateTimeIsoAmPm(0, 0, value, { input: 'dateIso' } as unknown as Column, {}, {});
+    const result = Formatters.dateTimeIsoAmPm(0, 0, value, { type: 'dateIso' } as unknown as Column, {}, {});
     expect(result).toBe('2019-05-01 02:36:07 am');
   });
 
diff --git a/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeIsoFormatter.spec.ts b/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeIsoFormatter.spec.ts
index 0a1965a25..f4299a681 100644
--- a/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeIsoFormatter.spec.ts
+++ b/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeIsoFormatter.spec.ts
@@ -16,7 +16,7 @@ describe('the DateTimeIso Formatter', () => {
 
   it('should provide a dateIso formatted input and return a formatted date value without time when valid date value is provided', () => {
     const value = '2019-05-01 02:36:07';
-    const result = Formatters.dateTimeIso(0, 0, value, { input: 'dateIso' } as unknown as Column, {}, {});
+    const result = Formatters.dateTimeIso(0, 0, value, { type: 'dateIso' } as unknown as Column, {}, {});
     expect(result).toBe('2019-05-01 02:36:07');
   });
 
diff --git a/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeShortEuroFormatter.spec.ts b/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeShortEuroFormatter.spec.ts
index be4ac0146..a0147432c 100644
--- a/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeShortEuroFormatter.spec.ts
+++ b/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeShortEuroFormatter.spec.ts
@@ -16,7 +16,7 @@ describe('the DateTimeShortEuro Formatter', () => {
 
   it('should provide a dateIso formatted input and return a formatted date value without time when valid date value is provided', () => {
     const value = '2019-05-01 02:36:07';
-    const result = Formatters.dateTimeShortEuro(0, 0, value, { input: 'dateIso' } as unknown as Column, {}, {});
+    const result = Formatters.dateTimeShortEuro(0, 0, value, { type: 'dateIso' } as unknown as Column, {}, {});
     expect(result).toBe('01/05/2019 02:36');
   });
 
diff --git a/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeShortIsoFormatter.spec.ts b/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeShortIsoFormatter.spec.ts
index decfd386c..0f53a0ad6 100644
--- a/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeShortIsoFormatter.spec.ts
+++ b/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeShortIsoFormatter.spec.ts
@@ -16,7 +16,7 @@ describe('the DateTimeShortIso Formatter', () => {
 
   it('should provide a dateIso formatted input and return a formatted date value without time when valid date value is provided', () => {
     const value = '2019-05-01 02:36:07';
-    const result = Formatters.dateTimeShortIso(0, 0, value, { input: 'dateIso' } as unknown as Column, {}, {});
+    const result = Formatters.dateTimeShortIso(0, 0, value, { type: 'dateIso' } as unknown as Column, {}, {});
     expect(result).toBe('2019-05-01 02:36');
   });
 
diff --git a/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeShortUsFormatter.spec.ts b/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeShortUsFormatter.spec.ts
index 80e719167..76c045628 100644
--- a/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeShortUsFormatter.spec.ts
+++ b/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeShortUsFormatter.spec.ts
@@ -16,7 +16,7 @@ describe('the DateTimeShortUs Formatter', () => {
 
   it('should provide a dateIso formatted input and return a formatted date value without time when valid date value is provided', () => {
     const value = '2019-05-03 02:36:07';
-    const result = Formatters.dateTimeShortUs(0, 0, value, { input: 'dateIso' } as unknown as Column, {}, {});
+    const result = Formatters.dateTimeShortUs(0, 0, value, { type: 'dateIso' } as unknown as Column, {}, {});
     expect(result).toBe('05/03/2019 02:36');
   });
 
diff --git a/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeUsAmPmFormatter.spec.ts b/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeUsAmPmFormatter.spec.ts
index d8a222114..cf8614fa3 100644
--- a/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeUsAmPmFormatter.spec.ts
+++ b/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeUsAmPmFormatter.spec.ts
@@ -16,7 +16,7 @@ describe('the DateTimeShortUs Formatter', () => {
 
   it('should provide a dateIso formatted input and return a formatted date value without time when valid date value is provided', () => {
     const value = '2019-05-03 02:36:07';
-    const result = Formatters.dateTimeUsAmPm(0, 0, value, { input: 'dateIso' } as unknown as Column, {}, {});
+    const result = Formatters.dateTimeUsAmPm(0, 0, value, { type: 'dateIso' } as unknown as Column, {}, {});
     expect(result).toBe('05/03/2019 02:36:07 am');
   });
 
diff --git a/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeUsFormatter.spec.ts b/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeUsFormatter.spec.ts
index 4fdbf342e..e5d1f961f 100644
--- a/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeUsFormatter.spec.ts
+++ b/src/app/modules/angular-slickgrid/formatters/__tests__/dateTimeUsFormatter.spec.ts
@@ -16,7 +16,7 @@ describe('the DateTimeUs Formatter', () => {
 
   it('should provide a dateIso formatted input and return a formatted date value without time when valid date value is provided', () => {
     const value = '2019-05-03 02:36:07';
-    const result = Formatters.dateTimeUs(0, 0, value, { input: 'dateIso' } as unknown as Column, {}, {});
+    const result = Formatters.dateTimeUs(0, 0, value, { type: 'dateIso' } as unknown as Column, {}, {});
     expect(result).toBe('05/03/2019 02:36:07');
   });
 
diff --git a/src/app/modules/angular-slickgrid/formatters/__tests__/dateUsFormatter.spec.ts b/src/app/modules/angular-slickgrid/formatters/__tests__/dateUsFormatter.spec.ts
index aac7c0be9..76141cdde 100644
--- a/src/app/modules/angular-slickgrid/formatters/__tests__/dateUsFormatter.spec.ts
+++ b/src/app/modules/angular-slickgrid/formatters/__tests__/dateUsFormatter.spec.ts
@@ -16,7 +16,7 @@ describe('the DateUs Formatter', () => {
 
   it('should provide a dateIso formatted input and return a formatted date value without time when valid date value is provided', () => {
     const value = '2019-05-03';
-    const result = Formatters.dateUs(0, 0, value, { input: 'dateIso' } as unknown as Column, {}, {});
+    const result = Formatters.dateUs(0, 0, value, { type: 'dateIso' } as unknown as Column, {}, {});
     expect(result).toBe('05/03/2019');
   });
 
diff --git a/src/app/modules/angular-slickgrid/sorters/dateUtilities.ts b/src/app/modules/angular-slickgrid/sorters/dateUtilities.ts
index 5d2f240c3..7ecca1085 100644
--- a/src/app/modules/angular-slickgrid/sorters/dateUtilities.ts
+++ b/src/app/modules/angular-slickgrid/sorters/dateUtilities.ts
@@ -6,18 +6,18 @@ const moment = moment_; // patch to fix rollup "moment has no default export" is
 export function compareDates(value1: any, value2: any, sortDirection: number, sortColumn: Column, gridOptions: GridOption, format: string | moment_.MomentBuiltinFormat, strict?: boolean) {
   let diff = 0;
   const checkForUndefinedValues = sortColumn && sortColumn.valueCouldBeUndefined || gridOptions && gridOptions.cellValueCouldBeUndefined || false;
+  const date1 = moment(value1, format, strict);
+  const date2 = moment(value2, format, strict);
 
-  if (value1 === null || value1 === '' || (checkForUndefinedValues && value1 === undefined) || !moment(value1, format, strict).isValid()) {
+  if (value1 === null || value1 === '' || (checkForUndefinedValues && value1 === undefined) || !date1.isValid()) {
     diff = -1;
-  } else if (value2 === null || value2 === '' || (checkForUndefinedValues && value2 === undefined) || !moment(value2, format, strict).isValid()) {
+  } else if (value2 === null || value2 === '' || (checkForUndefinedValues && value2 === undefined) || !date2.isValid()) {
     diff = 1;
   } else {
-    const date1 = moment(value1, format, strict);
-    const date2 = moment(value2, format, strict);
-    diff = parseInt(date1.format('X'), 10) - parseInt(date2.format('X'), 10);
+    diff = date1.valueOf() < date2.valueOf() ? -1 : 1;
   }
 
-  return sortDirection * (diff === 0 ? 0 : (diff > 0 ? 1 : -1));
+  return sortDirection * diff;
 }
 
 /** From a FieldType, return the associated date Sorter */