diff --git a/__tests__/groups/group.test.js b/__tests__/groups/group.test.js
index 97f49624..440494dd 100644
--- a/__tests__/groups/group.test.js
+++ b/__tests__/groups/group.test.js
@@ -21,6 +21,19 @@ describe('Discord Groups Page', () => {
   let page;
   jest.setTimeout(60000);
 
+  // Shared constants for date formatting tests
+  const TEST_TIMESTAMP = Date.UTC(2024, 10, 6, 10, 15);
+  const FULL_DATE_FORMAT_OPTIONS = {
+    weekday: 'long',
+    year: 'numeric',
+    month: 'short',
+    day: 'numeric',
+    hour: 'numeric',
+    minute: 'numeric',
+    timeZoneName: 'short',
+    hour12: true,
+  };
+
   beforeAll(async () => {
     browser = await puppeteer.launch({
       headless: 'new',
@@ -422,4 +435,116 @@ describe('Discord Groups Page', () => {
       'Group deleted successfully',
     );
   });
+  test('Should display last used label and tooltip when lastUsedOn is present', async () => {
+    await page.goto(`${LOCAL_TEST_PAGE_URL}/groups`);
+    await page.waitForNetworkIdle();
+
+    const groupCardHandle = await page.evaluateHandle(() => {
+      const cards = Array.from(document.querySelectorAll('.card'));
+      return (
+        cards.find((card) => {
+          const el = card.querySelector('.card__last-used');
+          return el && getComputedStyle(el).display !== 'none';
+        }) || null
+      );
+    });
+
+    expect(groupCardHandle).toBeTruthy();
+
+    const lastUsedText = await page.evaluate((card) => {
+      const el = card.querySelector('.card__last-used');
+      if (!el) return '';
+      const tooltipElement = el.querySelector('.tooltip');
+      if (tooltipElement) {
+        const fullText = el.textContent.trim();
+        const tooltipText = tooltipElement.textContent.trim();
+        return fullText.replace(tooltipText, '').trim();
+      }
+      const firstChildNode = el.childNodes[0];
+      if (firstChildNode && firstChildNode.nodeType === Node.TEXT_NODE)
+        return firstChildNode.textContent.trim();
+      return el.textContent.trim();
+    }, groupCardHandle);
+
+    expect(lastUsedText).toMatch(/^Last used on: \d{1,2} [A-Za-z]{3} \d{4}$/);
+
+    const tooltipText = await page.evaluate((card) => {
+      const tooltipElement = card.querySelector('.card__last-used .tooltip');
+      return tooltipElement ? tooltipElement.textContent.trim() : '';
+    }, groupCardHandle);
+
+    expect(tooltipText.length).toBeGreaterThan(0);
+  });
+
+  test('Should hide last used label when lastUsedOn is absent', async () => {
+    await page.goto(`${LOCAL_TEST_PAGE_URL}/groups`);
+    await page.waitForNetworkIdle();
+
+    const isAnyCardHidden = await page.evaluate(() => {
+      const cards = Array.from(document.querySelectorAll('.card'));
+      return cards.some((card) => {
+        const el = card.querySelector('.card__last-used');
+        return el && getComputedStyle(el).display === 'none';
+      });
+    });
+
+    expect(isAnyCardHidden).toBe(true);
+  });
+
+  test('Should return correctly formatted full date string and N/A for invalid inputs', async () => {
+    const evaluationResult = await page.evaluate(
+      async (timestamp, fullDateFormatOptions) => {
+        const utilsModule = await import('/groups/utils.js');
+        const formatted = utilsModule.fullDateString(timestamp);
+        const expected = new Intl.DateTimeFormat(
+          'en-US',
+          fullDateFormatOptions,
+        ).format(new Date(timestamp));
+        const invalidString = utilsModule.fullDateString('abc');
+        const invalidNotANumber = utilsModule.fullDateString(NaN);
+        const invalidObject = utilsModule.fullDateString({});
+        return {
+          formatted,
+          expected,
+          invalidString,
+          invalidNotANumber,
+          invalidObject,
+        };
+      },
+      TEST_TIMESTAMP,
+      FULL_DATE_FORMAT_OPTIONS,
+    );
+
+    expect(evaluationResult.formatted).toBe(evaluationResult.expected);
+    expect(evaluationResult.invalidString).toBe('N/A');
+    expect(evaluationResult.invalidNotANumber).toBe('N/A');
+    expect(evaluationResult.invalidObject).toBe('N/A');
+  });
+
+  test('Should return correctly formatted short date string and N/A for invalid inputs', async () => {
+    const evaluationResult = await page.evaluate(async (timestamp) => {
+      const utilsModule = await import('/groups/utils.js');
+      const formatted = utilsModule.shortDateString(timestamp);
+      const dateInstance = new Date(timestamp);
+      const month = new Intl.DateTimeFormat('en-US', { month: 'short' }).format(
+        dateInstance,
+      );
+      const expected = `${dateInstance.getDate()} ${month} ${dateInstance.getFullYear()}`;
+      const invalidUndefined = utilsModule.shortDateString(undefined);
+      const invalidStringInput = utilsModule.shortDateString('bad');
+      const invalidNotANumber = utilsModule.shortDateString(NaN);
+      return {
+        formatted,
+        expected,
+        invalidUndefined,
+        invalidStringInput,
+        invalidNotANumber,
+      };
+    }, TEST_TIMESTAMP);
+
+    expect(evaluationResult.formatted).toBe(evaluationResult.expected);
+    expect(evaluationResult.invalidUndefined).toBe('N/A');
+    expect(evaluationResult.invalidStringInput).toBe('N/A');
+    expect(evaluationResult.invalidNotANumber).toBe('N/A');
+  });
 });
diff --git a/groups/createElements.js b/groups/createElements.js
index 18c7c8e6..f13c6b23 100644
--- a/groups/createElements.js
+++ b/groups/createElements.js
@@ -1,3 +1,5 @@
+import { fullDateString, shortDateString } from './utils.js';
+
 const createCard = (
   rawGroup,
   onClick = () => {},
@@ -27,6 +29,7 @@ const createCard = (
           }  
         </div>
         <p class="card__description"></p>
+        <p class="card__last-used"></p>
         <div class="card__action">
             <button class="card__btn button"></button>
             <span class="card__count">
@@ -41,6 +44,19 @@ const createCard = (
   cardElement.querySelector('.card__title').textContent = group.title;
   cardElement.querySelector('.card__description').textContent =
     group.description;
+  const lastUsedElement = cardElement.querySelector('.card__last-used');
+  if (group.lastUsedTimestamp) {
+    const shortFormatted = shortDateString(group.lastUsedTimestamp);
+    lastUsedElement.classList.add('tooltip-container');
+    lastUsedElement.textContent = `Last used on: ${shortFormatted}`;
+
+    const tooltip = document.createElement('span');
+    tooltip.className = 'tooltip';
+    tooltip.innerText = fullDateString(group.lastUsedTimestamp);
+    lastUsedElement.appendChild(tooltip);
+  } else {
+    lastUsedElement.style.display = 'none';
+  }
   cardElement.querySelector('.card__btn').textContent = group.isMember
     ? 'Remove me'
     : 'Add me';
diff --git a/groups/script.js b/groups/script.js
index d4075405..72d4672b 100644
--- a/groups/script.js
+++ b/groups/script.js
@@ -196,6 +196,12 @@ const afterAuthentication = async () => {
           .split('-')
           .map((word) => word.charAt(0).toUpperCase() + word.slice(1))
           .join(' ');
+        const lastUsedTimestamp =
+          group?.lastUsedOn?.seconds !== undefined
+            ? group.lastUsedOn.seconds * 1000
+            : group?.lastUsedOn?._seconds !== undefined
+            ? group.lastUsedOn._seconds * 1000
+            : undefined;
         acc[group.id] = {
           id: group.id,
           title: title,
@@ -203,6 +209,7 @@ const afterAuthentication = async () => {
           isMember: group.isMember,
           roleId: group.roleid,
           description: group.description,
+          lastUsedTimestamp,
           isUpdating: false,
         };
         return acc;
diff --git a/groups/style.css b/groups/style.css
index 08c9a89e..e5f05613 100644
--- a/groups/style.css
+++ b/groups/style.css
@@ -390,6 +390,37 @@ body {
   line-height: 18px;
 }
 
+.card__last-used {
+  margin-top: 0.4rem;
+  color: var(--color-text-secondary);
+  font-size: 0.75rem;
+}
+
+.tooltip-container {
+  position: relative;
+}
+
+.tooltip {
+  background-color: var(--black-color, #000);
+  color: var(--white, #fff);
+  visibility: hidden;
+  text-align: center;
+  border-radius: 4px;
+  padding: 0.5rem;
+  position: absolute;
+  opacity: 0.9;
+  font-size: 0.7rem;
+  width: 10rem;
+  bottom: 100%;
+  left: 50%;
+  margin-left: -5rem;
+}
+
+.tooltip-container:hover .tooltip {
+  visibility: visible;
+  transition-delay: 400ms;
+}
+
 .card__action {
   display: flex;
   justify-content: space-between;
diff --git a/groups/utils.js b/groups/utils.js
index f97112f4..2c218bef 100644
--- a/groups/utils.js
+++ b/groups/utils.js
@@ -178,6 +178,42 @@ function setParamValueInURL(paramKey, paramValue) {
   );
 }
 
+const fullDateString = (timestamp) => {
+  if (typeof timestamp !== 'number' || !Number.isFinite(timestamp)) {
+    return 'N/A';
+  }
+  const dateObj = new Date(timestamp);
+  if (isNaN(dateObj.getTime())) {
+    return 'N/A';
+  }
+  const options = {
+    weekday: 'long',
+    year: 'numeric',
+    month: 'short',
+    day: 'numeric',
+    hour: 'numeric',
+    minute: 'numeric',
+    timeZoneName: 'short',
+    hour12: true,
+  };
+  return new Intl.DateTimeFormat('en-US', options).format(dateObj);
+};
+
+const shortDateString = (timestamp) => {
+  if (typeof timestamp !== 'number' || !Number.isFinite(timestamp)) {
+    return 'N/A';
+  }
+  const date = new Date(timestamp);
+  if (isNaN(date.getTime())) {
+    return 'N/A';
+  }
+  const year = date.getFullYear();
+  const month = new Intl.DateTimeFormat('en-US', { month: 'short' }).format(
+    date,
+  );
+  return `${date.getDate()} ${month} ${year}`;
+};
+
 export {
   getUserGroupRoles,
   getMembers,
@@ -191,4 +227,6 @@ export {
   getDiscordGroupIdsFromSearch,
   getParamValueFromURL,
   setParamValueInURL,
+  fullDateString,
+  shortDateString,
 };