diff --git a/app/contributors/[slug]/page.tsx b/app/contributors/[slug]/page.tsx
index ad4b45ba..cc48b641 100644
--- a/app/contributors/[slug]/page.tsx
+++ b/app/contributors/[slug]/page.tsx
@@ -352,7 +352,7 @@ export default async function Contributor({ params }: Params) {
                   Last contribution{" "}
                   {contributor.activityData.last_updated ? (
                     <RelativeTime
-                      time={contributor.activityData.last_updated * 1e3}
+                      time={contributor.activityData.last_updated}
                     />
                   ) : (
                     "unknown"
diff --git a/components/contributors/GithubActivity.tsx b/components/contributors/GithubActivity.tsx
index 41d90018..ef121617 100644
--- a/components/contributors/GithubActivity.tsx
+++ b/components/contributors/GithubActivity.tsx
@@ -22,7 +22,7 @@ let commentTypes = (activityEvent: string[]) => {
 };
 
 let renderText = (activity: Activity) => {
-  const timestamp = getActivityTime(activity.time).toString();
+  const timestamp = new Date(activity.time).toString();
   switch (activity["type"]) {
     case "eod_update":
       return (
@@ -265,22 +265,18 @@ let showContribution = (activity: Activity) => {
   );
 };
 
-const getActivityTime = (time: Activity["time"]) => {
-  return typeof time === "number" ? new Date(time * 1e3) : new Date(time);
-};
-
 const activitiesBetween = (range: { from: Date; to: Date }) => {
   const from = range.from.getTime();
   const to = range.to.getTime();
 
   return (activity: Activity) => {
-    const time = getActivityTime(activity.time).getTime();
+    const time = new Date(activity.time).getTime();
     return from < time && time < to;
   };
 };
 
 const compareByActivityTime = (a: Activity, b: Activity) => {
-  return getActivityTime(b.time).getTime() - getActivityTime(a.time).getTime();
+  return new Date(b.time).getTime() - new Date(a.time).getTime();
 };
 
 const activitiesOfType = (types: Activity["type"][]) => {
@@ -292,11 +288,11 @@ const activitiesOfType = (types: Activity["type"][]) => {
 const getRangeFilterPresets = (activities: Activity[]) => {
   if (!activities.length) return [];
 
-  const latest = getActivityTime(activities[0].time);
+  const latest = new Date(activities[0].time);
   let oldest = new Date(latest);
 
   activities.forEach((activity) => {
-    const time = getActivityTime(activity.time);
+    const time = new Date(activity.time);
     if (time < oldest) {
       oldest = time;
     }
diff --git a/lib/api.ts b/lib/api.ts
index 37288e3f..4a33d9d3 100644
--- a/lib/api.ts
+++ b/lib/api.ts
@@ -183,10 +183,6 @@ export async function getContributorBySlug(file: string, detail = false) {
   } as Contributor & { summarize: typeof summarize };
 }
 
-const getActivityTime = (time: Activity["time"]) => {
-  return typeof time === "number" ? new Date(time * 1e3) : new Date(time);
-};
-
 export async function getContributors(detail = false) {
   const slugs = await getContributorsSlugs();
   return Promise.all(
@@ -197,8 +193,7 @@ export async function getContributors(detail = false) {
 function getCalendarData(activity: Activity[]) {
   const calendarData = activity.reduce(
     (acc, activity) => {
-      // Github activity.time ignores milliseconds (*1000)
-      const date = getActivityTime(activity.time).toISOString().split("T")[0];
+      const date = new Date(activity.time).toISOString().split("T")[0];
       if (!acc[date]) {
         acc[date] = {
           count: 0,
diff --git a/lib/types.ts b/lib/types.ts
index e573ed1f..2681530d 100644
--- a/lib/types.ts
+++ b/lib/types.ts
@@ -25,7 +25,7 @@ export interface Contributor {
 }
 
 export interface ActivityData {
-  last_updated?: number;
+  last_updated?: string;
   activity: Activity[];
   open_prs: OpenPr[];
   pr_stale: number;
@@ -71,7 +71,7 @@ export const ACTIVITY_TYPES = [
 export interface Activity {
   type: (typeof ACTIVITY_TYPES)[number];
   title: string;
-  time: number | string; // TODO: github events are in seconds since epoch, slack events are in timestamp strings. Unify it to one.
+  time: string;
   link: string;
   text: string;
   collaborated_with?: string[];