diff --git a/public/pages/Overview/utils/constants.ts b/public/pages/Overview/utils/constants.ts
index 12b80c0b1..d8438e667 100644
--- a/public/pages/Overview/utils/constants.ts
+++ b/public/pages/Overview/utils/constants.ts
@@ -9,18 +9,3 @@ export const summaryGroupByOptions = [
 ];
 
 export const moreLink = 'https://opensearch.org/docs/latest/security-analytics/';
-
-/**
- * Time axis' timeUnit map
- * for each time search unit there is a mapped chart timeUnit
- */
-export const TimeUnitsMap: {
-  [key: string]: string;
-} = {
-  minutes: 'yearmonthdatehoursminutes',
-  hours: 'yearmonthdatehoursminutes',
-  days: 'yearmonthdatehours',
-  weeks: 'yearmonthdatehours',
-  months: 'yearmonthdatehours',
-  years: 'yearmonthdate',
-};
diff --git a/public/pages/Overview/utils/helper.test.ts b/public/pages/Overview/utils/helper.test.ts
index a267253c1..c681cc338 100644
--- a/public/pages/Overview/utils/helper.test.ts
+++ b/public/pages/Overview/utils/helper.test.ts
@@ -1,18 +1,53 @@
-import { getChartTimeUnit } from './helpers';
-import { TimeUnitsMap } from './constants';
+import { getChartTimeUnit, TimeUnit, TimeUnits } from './helpers';
 
 describe('helper utilities spec', () => {
   describe('tests getChartTimeUnit function', () => {
-    const defaultTimeUnit = 'yearmonthdatehoursminutes';
+    const defaultTimeUnit = {
+      timeUnit: { unit: 'yearmonthdatehoursminutes', step: 1 },
+      dateFormat: '%Y-%m-%d %H:%M',
+    };
     it(' - function should return default timeUnit if fn params are invalid', () => {
-      expect(getChartTimeUnit('', '')).toBe(defaultTimeUnit);
+      const timeUnits = getChartTimeUnit('', '');
+      expect(timeUnits.dateFormat).toBe(defaultTimeUnit.dateFormat);
+      expect(timeUnits.timeUnit.unit).toBe(defaultTimeUnit.timeUnit.unit);
+      expect(timeUnits.timeUnit.step).toBe(defaultTimeUnit.timeUnit.step);
     });
 
     it(' - function should return default timeUnit if one is passed as param', () => {
-      const defaultFormat = 'yearmonthdate';
-      expect(getChartTimeUnit('', '', defaultFormat)).toBe(defaultFormat);
+      const defaultFormat = 'yearmonthdatehoursminutes';
+      const timeUnits = getChartTimeUnit('', '', defaultFormat);
+      expect(timeUnits.timeUnit.unit).toBe(defaultFormat);
     });
 
+    const timeUnitsExpected: {
+      [key: string]: TimeUnits;
+    } = {
+      minutes: {
+        dateFormat: '%Y-%m-%d %H:%M',
+        timeUnit: { step: 1, unit: 'yearmonthdatehoursminutes' },
+      },
+      hours: {
+        dateFormat: '%Y-%m-%d %H:%M',
+        timeUnit: { step: 1, unit: 'yearmonthdatehours' },
+      },
+      days: {
+        dateFormat: '%Y-%m-%d',
+        timeUnit: { step: 1, unit: 'yearmonthdate' },
+      },
+      weeks: {
+        dateFormat: '%Y-%m-%d',
+        timeUnit: { step: 1, unit: 'yearmonthdate' },
+      },
+      months: {
+        dateFormat: '%Y-%m-%d',
+        timeUnit: { step: 1, unit: 'yearmonthdate' },
+      },
+      years: {
+        dateFormat: '%Y',
+        timeUnit: { step: 1, unit: 'year' },
+      },
+    };
+
     const timeUnits: {
       [key: string]: string;
     } = {
@@ -24,9 +59,16 @@ describe('helper utilities spec', () => {
       years: 'now-15y',
     };
 
+    const validateTimeUnit = (timeUnit: TimeUnits, expectedTimeUnit: TimeUnits) => {
+      expect(timeUnit.dateFormat).toBe(expectedTimeUnit.dateFormat);
+      expect(timeUnit.timeUnit.unit).toBe(expectedTimeUnit.timeUnit.unit);
+      expect(timeUnit.timeUnit.step).toBe(expectedTimeUnit.timeUnit.step);
+    };
+
     for (const [unit, start] of Object.entries(timeUnits)) {
-      it(` - function should return ${TimeUnitsMap[unit]} if unit is ${unit}`, () => {
-        expect(getChartTimeUnit(start, 'now')).toBe(TimeUnitsMap[unit]);
+      it(` - filter ${start} should return valid timeUnit object`, () => {
+        const timeUnitResult = getChartTimeUnit(start, 'now');
+        validateTimeUnit(timeUnitResult, timeUnitsExpected[unit]);
       });
     }
   });